156019968 has 108 divisors (see below), whose sum is σ = 484540420. Its totient is φ = 47996928.

The previous prime is 156019967. The next prime is 156019987. The reversal of 156019968 is 869910651.

It can be written as a sum of positive squares in 2 ways, for example, as 97772544 + 58247424 = 9888^2 + 7632^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156019961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27348 + ... + 32556.

Almost surely, 2^156019968 is an apocalyptic number.

156019968 is a gapful number since it is divisible by the number (18) 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 156019968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242270210).

156019968 is an abundant number, since it is smaller than the sum of its proper divisors (328520452).

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

156019968 is a wasteful number, since it uses less digits than its factorization.

156019968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5244 (or 5227 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 156019968 is about 12490.7953309627. The cubic root of 156019968 is about 538.3442286026.

It can be divided in two parts, 1560 and 19968, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 156019968 in words is "one hundred fifty-six million, nineteen thousand, nine hundred sixty-eight".