156199968 has 96 divisors (see below), whose sum is σ = 457773120. Its totient is φ = 51816960.

The previous prime is 156199933. The next prime is 156199997. The reversal of 156199968 is 869991651.

156199968 is a `hidden beast` number, since 15 + 619 + 9 + 9 + 6 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 299548 + ... + 300068.

It is an arithmetic number, because the mean of its divisors is an integer number (4768470).

Almost surely, 2^156199968 is an apocalyptic number.

156199968 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 156199968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228886560).

156199968 is an abundant number, since it is smaller than the sum of its proper divisors (301573152).

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

156199968 is a wasteful number, since it uses less digits than its factorization.

156199968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887 (or 873 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 54.

The square root of 156199968 is about 12497.9985597695. The cubic root of 156199968 is about 538.5511780101.

The spelling of 156199968 in words is "one hundred fifty-six million, one hundred ninety-nine thousand, nine hundred sixty-eight".