156890680 has 16 divisors (see below), whose sum is σ = 353004120. Its totient is φ = 62756256.

The previous prime is 156890663. The next prime is 156890681. The reversal of 156890680 is 86098651.

It is a super-2 number, since 2×156890680² = 49229370941724800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156890681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1961094 + ... + 1961173.

Almost surely, 2^156890680 is an apocalyptic number.

156890680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156890680 is an abundant number, since it is smaller than the sum of its proper divisors (196113440).

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

156890680 is a wasteful number, since it uses less digits than its factorization.

156890680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3922278 (or 3922274 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 156890680 is about 12525.6009835856. The cubic root of 156890680 is about 539.3438303356.

The spelling of 156890680 in words is "one hundred fifty-six million, eight hundred ninety thousand, six hundred eighty".