157123984 has 10 divisors (see below), whose sum is σ = 304427750. Its totient is φ = 78561984.

The previous prime is 157123973. The next prime is 157123987. The reversal of 157123984 is 489321751.

It can be written as a sum of positive squares in only one way, i.e., 155750400 + 1373584 = 12480^2 + 1172^2 .

It is not an unprimeable number, because it can be changed into a prime (157123987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4910109 + ... + 4910140.

It is an arithmetic number, because the mean of its divisors is an integer number (30442775).

Almost surely, 2^157123984 is an apocalyptic number.

It is an amenable number.

157123984 is a deficient number, since it is larger than the sum of its proper divisors (147303766).

157123984 is an equidigital number, since it uses as much as digits as its factorization.

157123984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9820257 (or 9820251 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 157123984 is about 12534.9106099725. The cubic root of 157123984 is about 539.6110413477.

The spelling of 157123984 in words is "one hundred fifty-seven million, one hundred twenty-three thousand, nine hundred eighty-four".