156556340 has 48 divisors (see below), whose sum is σ = 334711440. Its totient is φ = 61501440.

The previous prime is 156556313. The next prime is 156556357. The reversal of 156556340 is 43655651.

It can be written as a sum of positive squares in 8 ways, for example, as 35952016 + 120604324 = 5996^2 + 10982^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 156556340.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 500024 + ... + 500336.

It is an arithmetic number, because the mean of its divisors is an integer number (6973155).

Almost surely, 2^156556340 is an apocalyptic number.

156556340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156556340 is an abundant number, since it is smaller than the sum of its proper divisors (178155100).

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

156556340 is a wasteful number, since it uses less digits than its factorization.

156556340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692 (or 690 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 156556340 is about 12512.2475998519. The cubic root of 156556340 is about 538.9604371332.

It can be divided in two parts, 1565 and 56340, that multiplied together give a square (88172100 = 9390²).

The spelling of 156556340 in words is "one hundred fifty-six million, five hundred fifty-six thousand, three hundred forty".