12781902 has 16 divisors (see below), whose sum is σ = 29215872. Its totient is φ = 3651960.

The previous prime is 12781897. The next prime is 12781903. The reversal of 12781902 is 20918721.

It is a self number, because there is not a number n which added to its sum of digits gives 12781902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12781903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152124 + ... + 152207.

It is an arithmetic number, because the mean of its divisors is an integer number (1825992).

Almost surely, 2^12781902 is an apocalyptic number.

12781902 is an abundant number, since it is smaller than the sum of its proper divisors (16433970).

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

12781902 is a wasteful number, since it uses less digits than its factorization.

12781902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304343.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 12781902 is about 3575.1785969375. The cubic root of 12781902 is about 233.8111194041.

The spelling of 12781902 in words is "twelve million, seven hundred eighty-one thousand, nine hundred two".