156947680 has 48 divisors (see below), whose sum is σ = 373509360. Its totient is φ = 62318592.

The previous prime is 156947677. The next prime is 156947717. The reversal of 156947680 is 86749651.

It is a self number, because there is not a number n which added to its sum of digits gives 156947680.

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 7 ways as a sum of consecutive naturals, for example, 18712 + ... + 25768.

It is an arithmetic number, because the mean of its divisors is an integer number (7781445).

Almost surely, 2^156947680 is an apocalyptic number.

156947680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156947680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186754680).

156947680 is an abundant number, since it is smaller than the sum of its proper divisors (216561680).

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

156947680 is a wasteful number, since it uses less digits than its factorization.

156947680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7211 (or 7203 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 156947680 is about 12527.8761168843. The cubic root of 156947680 is about 539.4091388167.

The spelling of 156947680 in words is "one hundred fifty-six million, nine hundred forty-seven thousand, six hundred eighty".