12801915 has 128 divisors (see below), whose sum is σ = 29491200. Its totient is φ = 5132160.

The previous prime is 12801913. The next prime is 12801923. The reversal of 12801915 is 51910821.

It is not a de Polignac number, because 12801915 - 2¹ = 12801913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12801911) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 412950 + ... + 412980.

It is an arithmetic number, because the mean of its divisors is an integer number (230400).

Almost surely, 2^12801915 is an apocalyptic number.

12801915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12801915 is an abundant number, since it is smaller than the sum of its proper divisors (16689285).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12801915 is a wasteful number, since it uses less digits than its factorization.

12801915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 12801915 is about 3577.9763833765. The cubic root of 12801915 is about 233.9330840878.

The spelling of 12801915 in words is "twelve million, eight hundred one thousand, nine hundred fifteen".