| Base | Representation |
|---|---|
| bin | 1110100110000… |
| … | …10110010000000 |
| 3 | 22112101020000020 |
| 4 | 13103002302000 |
| 5 | 222320321030 |
| 6 | 20052053440 |
| 7 | 3014442321 |
| oct | 723026200 |
| 9 | 275336006 |
| 10 | 122432640 |
| 11 | 63123500 |
| 12 | 35004280 |
| 13 | 1c499265 |
| 14 | 12390448 |
| 15 | ab36510 |
| hex | 74c2c80 |
122432640 has 384 divisors, whose sum is σ = 468840960. Its totient is φ = 27033600.
The previous prime is 122432633. The next prime is 122432641. The reversal of 122432640 is 46234221.
It is a tau number, because it is divible by the number of its divisors (384).
It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.
It is a Harshad number since it is a multiple of its sum of digits (24).
It is a self number, because there is not a number n which added to its sum of digits gives 122432640.
It is not an unprimeable number, because it can be changed into a prime (122432641) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3949425 + ... + 3949455.
It is an arithmetic number, because the mean of its divisors is an integer number (1220940).
Almost surely, 2122432640 is an apocalyptic number.
122432640 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 122432640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234420480).
122432640 is an abundant number, since it is smaller than the sum of its proper divisors (346408320).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
122432640 is a wasteful number, since it uses less digits than its factorization.
122432640 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 92 (or 69 counting only the distinct ones).
The product of its (nonzero) digits is 2304, while the sum is 24.
The square root of 122432640 is about 11064.9283775359. The cubic root of 122432640 is about 496.5531463348.
Adding to 122432640 its reverse (46234221), we get a palindrome (168666861).
The spelling of 122432640 in words is "one hundred twenty-two million, four hundred thirty-two thousand, six hundred forty".
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