156897140 has 24 divisors (see below), whose sum is σ = 329768712. Its totient is φ = 62704640.

The previous prime is 156897133. The next prime is 156897151. The reversal of 156897140 is 41798651.

156897140 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 30514576 + 126382564 = 5524^2 + 11242^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26972 + ... + 32268.

It is an arithmetic number, because the mean of its divisors is an integer number (13740363).

Almost surely, 2^156897140 is an apocalyptic number.

156897140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156897140 is an abundant number, since it is smaller than the sum of its proper divisors (172871572).

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

156897140 is a wasteful number, since it uses less digits than its factorization.

156897140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6787 (or 6785 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 156897140 is about 12525.8588527893. The cubic root of 156897140 is about 539.3512327581.

The spelling of 156897140 in words is "one hundred fifty-six million, eight hundred ninety-seven thousand, one hundred forty".