156778960 has 80 divisors (see below), whose sum is σ = 395974656. Its totient is φ = 57383424.

The previous prime is 156778939. The next prime is 156778991. The reversal of 156778960 is 69877651.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131487 + ... + 132673.

Almost surely, 2^156778960 is an apocalyptic number.

156778960 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 156778960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197987328).

156778960 is an abundant number, since it is smaller than the sum of its proper divisors (239195696).

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

156778960 is a wasteful number, since it uses less digits than its factorization.

156778960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340 (or 1334 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 49.

The square root of 156778960 is about 12521.1405231313. The cubic root of 156778960 is about 539.2157798127.

The spelling of 156778960 in words is "one hundred fifty-six million, seven hundred seventy-eight thousand, nine hundred sixty".