157229644 has 48 divisors (see below), whose sum is σ = 333720576. Its totient is φ = 63835200.

The previous prime is 157229623. The next prime is 157229647. The reversal of 157229644 is 446922751.

It is a junction number, because it is equal to n+sod(n) for n = 157229597 and 157229606.

It is not an unprimeable number, because it can be changed into a prime (157229647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13299 + ... + 22165.

It is an arithmetic number, because the mean of its divisors is an integer number (6952512).

Almost surely, 2^157229644 is an apocalyptic number.

It is an amenable number.

157229644 is an abundant number, since it is smaller than the sum of its proper divisors (176490932).

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

157229644 is a wasteful number, since it uses less digits than its factorization.

157229644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8926 (or 8924 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 157229644 is about 12539.1245308435. The cubic root of 157229644 is about 539.7319703231.

The spelling of 157229644 in words is "one hundred fifty-seven million, two hundred twenty-nine thousand, six hundred forty-four".