157620232 has 32 divisors (see below), whose sum is σ = 368464320. Its totient is φ = 61410240.

The previous prime is 157620223. The next prime is 157620233. The reversal of 157620232 is 232026751.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 157620232.

It is not an unprimeable number, because it can be changed into a prime (157620233) 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, 127323 + ... + 128554.

It is an arithmetic number, because the mean of its divisors is an integer number (11514510).

Almost surely, 2^157620232 is an apocalyptic number.

It is an amenable number.

157620232 is an abundant number, since it is smaller than the sum of its proper divisors (210844088).

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

157620232 is a wasteful number, since it uses less digits than its factorization.

157620232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255901 (or 255897 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 157620232 is about 12554.6896417235. The cubic root of 157620232 is about 540.1785326458.

Adding to 157620232 its reverse (232026751), we get a palindrome (389646983).

The spelling of 157620232 in words is "one hundred fifty-seven million, six hundred twenty thousand, two hundred thirty-two".