157678188 has 48 divisors (see below), whose sum is σ = 388590720. Its totient is φ = 49624704.

The previous prime is 157678181. The next prime is 157678211. The reversal of 157678188 is 881876751.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 157678188.

It is not an unprimeable number, because it can be changed into a prime (157678181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78120 + ... + 80112.

It is an arithmetic number, because the mean of its divisors is an integer number (8095640).

Almost surely, 2^157678188 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157678188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194295360).

157678188 is an abundant number, since it is smaller than the sum of its proper divisors (230912532).

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

157678188 is a wasteful number, since it uses less digits than its factorization.

157678188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2366 (or 2364 counting only the distinct ones).

The product of its digits is 752640, while the sum is 51.

The square root of 157678188 is about 12556.9975710757. The cubic root of 157678188 is about 540.2447313192.

The spelling of 157678188 in words is "one hundred fifty-seven million, six hundred seventy-eight thousand, one hundred eighty-eight".