157207878 has 24 divisors (see below), whose sum is σ = 353233608. Its totient is φ = 52402464.

The previous prime is 157207877. The next prime is 157207933. The reversal of 157207878 is 878702751.

157207878 is a `hidden beast` number, since 1 + 572 + 0 + 7 + 8 + 78 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157207873) 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, 161251 + ... + 162222.

It is an arithmetic number, because the mean of its divisors is an integer number (14718067).

Almost surely, 2^157207878 is an apocalyptic number.

157207878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

157207878 is an abundant number, since it is smaller than the sum of its proper divisors (196025730).

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

157207878 is an equidigital number, since it uses as much as digits as its factorization.

157207878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323490 (or 323478 counting only the distinct ones).

The product of its (nonzero) digits is 219520, while the sum is 45.

The square root of 157207878 is about 12538.2565773715. The cubic root of 157207878 is about 539.7070633401.

The spelling of 157207878 in words is "one hundred fifty-seven million, two hundred seven thousand, eight hundred seventy-eight".