157744072 has 8 divisors (see below), whose sum is σ = 295770150. Its totient is φ = 78872032.

The previous prime is 157744057. The next prime is 157744091. The reversal of 157744072 is 270447751.

157744072 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 100681156 + 57062916 = 10034^2 + 7554^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×157744072² = 49766384502282368, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9858997 + ... + 9859012.

Almost surely, 2^157744072 is an apocalyptic number.

It is an amenable number.

157744072 is a deficient number, since it is larger than the sum of its proper divisors (138026078).

157744072 is a wasteful number, since it uses less digits than its factorization.

157744072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19718015 (or 19718011 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 37.

The square root of 157744072 is about 12559.6206949095. The cubic root of 157744072 is about 540.3199658375.

The spelling of 157744072 in words is "one hundred fifty-seven million, seven hundred forty-four thousand, seventy-two".