| Base | Representation |
|---|---|
| bin | 111001010101… |
| … | …011111100000 |
| 3 | 1001021121121120 |
| 4 | 321111133200 |
| 5 | 12321431430 |
| 6 | 1254052240 |
| 7 | 241516641 |
| oct | 71253740 |
| 9 | 31247546 |
| 10 | 15030240 |
| 11 | 8536495 |
| 12 | 504a080 |
| 13 | 3163344 |
| 14 | 1dd36c8 |
| 15 | 14bd610 |
| hex | e557e0 |
15030240 has 96 divisors (see below), whose sum is σ = 47882016. Its totient is φ = 3962880.
The previous prime is 15030233. The next prime is 15030241. The reversal of 15030240 is 4203051.
It is a tau number, because it is divible by the number of its divisors (96).
It is a super-2 number, since 2×150302402 = 451816228915200, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (15030241) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82950 + ... + 83130.
It is an arithmetic number, because the mean of its divisors is an integer number (498771).
Almost surely, 215030240 is an apocalyptic number.
15030240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 15030240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23941008).
15030240 is an abundant number, since it is smaller than the sum of its proper divisors (32851776).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
15030240 is a wasteful number, since it uses less digits than its factorization.
15030240 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 372 (or 364 counting only the distinct ones).
The product of its (nonzero) digits is 120, while the sum is 15.
The square root of 15030240 is about 3876.8853478018. The cubic root of 15030240 is about 246.7868256388.
Adding to 15030240 its reverse (4203051), we get a palindrome (19233291).
The spelling of 15030240 in words is "fifteen million, thirty thousand, two hundred forty".
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