156899740 has 12 divisors (see below), whose sum is σ = 329489496. Its totient is φ = 62759888.

The previous prime is 156899719. The next prime is 156899741. The reversal of 156899740 is 47998651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156899741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3922474 + ... + 3922513.

It is an arithmetic number, because the mean of its divisors is an integer number (27457458).

Almost surely, 2^156899740 is an apocalyptic number.

156899740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156899740 is an abundant number, since it is smaller than the sum of its proper divisors (172589756).

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

156899740 is a wasteful number, since it uses less digits than its factorization.

156899740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7844996 (or 7844994 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 156899740 is about 12525.9626376578. The cubic root of 156899740 is about 539.3542120040.

The spelling of 156899740 in words is "one hundred fifty-six million, eight hundred ninety-nine thousand, seven hundred forty".