157284638 has 16 divisors (see below), whose sum is σ = 278329344. Its totient is φ = 65233080.

The previous prime is 157284637. The next prime is 157284643. The reversal of 157284638 is 836482751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157284637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180770 + ... + 181637.

It is an arithmetic number, because the mean of its divisors is an integer number (17395584).

Almost surely, 2^157284638 is an apocalyptic number.

157284638 is a deficient number, since it is larger than the sum of its proper divisors (121044706).

157284638 is a wasteful number, since it uses less digits than its factorization.

157284638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362447.

The product of its digits is 322560, while the sum is 44.

The square root of 157284638 is about 12541.3172354422. The cubic root of 157284638 is about 539.7948900950.

The spelling of 157284638 in words is "one hundred fifty-seven million, two hundred eighty-four thousand, six hundred thirty-eight".