157278400 has 42 divisors (see below), whose sum is σ = 387007100. Its totient is φ = 62910720.

The previous prime is 157278367. The next prime is 157278421. The reversal of 157278400 is 4872751.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47550 + ... + 50749.

Almost surely, 2^157278400 is an apocalyptic number.

157278400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157278400 is an abundant number, since it is smaller than the sum of its proper divisors (229728700).

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

157278400 is an equidigital number, since it uses as much as digits as its factorization.

157278400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98321 (or 98306 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 157278400 is about 12541.0685350173. The cubic root of 157278400 is about 539.7877538078.

The spelling of 157278400 in words is "one hundred fifty-seven million, two hundred seventy-eight thousand, four hundred".