12156798 has 16 divisors (see below), whose sum is σ = 24387840. Its totient is φ = 4039896.

The previous prime is 12156797. The next prime is 12156799. The reversal of 12156798 is 89765121.

It is an interprime number because it is at equal distance from previous prime (12156797) and next prime (12156799).

It is a super-2 number, since 2×12156798² = 295575475225608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12156791) 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, 838 + ... + 5001.

It is an arithmetic number, because the mean of its divisors is an integer number (1524240).

Almost surely, 2^12156798 is an apocalyptic number.

12156798 is an abundant number, since it is smaller than the sum of its proper divisors (12231042).

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

12156798 is a wasteful number, since it uses less digits than its factorization.

12156798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6191.

The product of its digits is 30240, while the sum is 39.

The square root of 12156798 is about 3486.6600063671. The cubic root of 12156798 is about 229.9356972100.

The spelling of 12156798 in words is "twelve million, one hundred fifty-six thousand, seven hundred ninety-eight".