157897284 has 12 divisors (see below), whose sum is σ = 368427024. Its totient is φ = 52632424.

The previous prime is 157897213. The next prime is 157897297. The reversal of 157897284 is 482798751.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6579042 + ... + 6579065.

It is an arithmetic number, because the mean of its divisors is an integer number (30702252).

Almost surely, 2^157897284 is an apocalyptic number.

It is an amenable number.

157897284 is an abundant number, since it is smaller than the sum of its proper divisors (210529740).

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

157897284 is a wasteful number, since it uses less digits than its factorization.

157897284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13158114 (or 13158112 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 51.

The square root of 157897284 is about 12565.7186026108. The cubic root of 157897284 is about 540.4948413269.

The spelling of 157897284 in words is "one hundred fifty-seven million, eight hundred ninety-seven thousand, two hundred eighty-four".