157663280 has 20 divisors (see below), whose sum is σ = 366567312. Its totient is φ = 63065280.

The previous prime is 157663279. The next prime is 157663291. The reversal of 157663280 is 82366751.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 985316 + ... + 985475.

Almost surely, 2^157663280 is an apocalyptic number.

157663280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157663280 is an abundant number, since it is smaller than the sum of its proper divisors (208904032).

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

157663280 is a wasteful number, since it uses less digits than its factorization.

157663280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1970804 (or 1970798 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 157663280 is about 12556.4039438049. The cubic root of 157663280 is about 540.2277046093.

The spelling of 157663280 in words is "one hundred fifty-seven million, six hundred sixty-three thousand, two hundred eighty".