157023634 has 8 divisors (see below), whose sum is σ = 241901388. Its totient is φ = 76389840.

The previous prime is 157023631. The next prime is 157023637. The reversal of 157023634 is 436320751.

It is an interprime number because it is at equal distance from previous prime (157023631) and next prime (157023637).

It can be written as a sum of positive squares in 2 ways, for example, as 135373225 + 21650409 = 11635^2 + 4653^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 157023596 and 157023605.

It is not an unprimeable number, because it can be changed into a prime (157023631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1060897 + ... + 1061044.

Almost surely, 2^157023634 is an apocalyptic number.

157023634 is a deficient number, since it is larger than the sum of its proper divisors (84877754).

157023634 is a wasteful number, since it uses less digits than its factorization.

157023634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121980.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 157023634 is about 12530.9071499233. The cubic root of 157023634 is about 539.4961395174.

The spelling of 157023634 in words is "one hundred fifty-seven million, twenty-three thousand, six hundred thirty-four".