| Base | Representation |
|---|---|
| bin | 1011110010000000001… |
| … | …0011111011100101000 |
| 3 | 201100102200011110100220 |
| 4 | 2330200002133130220 |
| 5 | 11304004123040140 |
| 6 | 232552015330040 |
| 7 | 20423454000606 |
| oct | 2744002373450 |
| 9 | 640380143326 |
| 10 | 202400986920 |
| 11 | 78924098210 |
| 12 | 33287820920 |
| 13 | 161178920b2 |
| 14 | 9b20d1a876 |
| 15 | 53e9142bd0 |
| hex | 2f2009f728 |
202400986920 has 128 divisors (see below), whose sum is σ = 665152836480. Its totient is φ = 48863232000.
The previous prime is 202400986913. The next prime is 202400986927. The reversal of 202400986920 is 29689004202.
202400986920 is a nontrivial binomial coefficient, being equal to C(636241, 2).
It is an interprime number because it is at equal distance from previous prime (202400986913) and next prime (202400986927).
It is a super-2 number, since 2×2024009869202 (a number of 23 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (202400986927) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1 + ... + 636240.
It is an arithmetic number, because the mean of its divisors is an integer number (5196506535).
Almost surely, 2202400986920 is an apocalyptic number.
202400986920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
202400986920 is the 636240-th triangular number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 202400986920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332576418240).
202400986920 is an abundant number, since it is smaller than the sum of its proper divisors (462751849560).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
202400986920 is a wasteful number, since it uses less digits than its factorization.
202400986920 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 636507 (or 636503 counting only the distinct ones).
The product of its (nonzero) digits is 124416, while the sum is 42.
The spelling of 202400986920 in words is "two hundred two billion, four hundred million, nine hundred eighty-six thousand, nine hundred twenty".
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