157663272 has 64 divisors (see below), whose sum is σ = 438197760. Its totient is φ = 46944000.

The previous prime is 157663271. The next prime is 157663277. The reversal of 157663272 is 272366751.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 157663272.

It is not an unprimeable number, because it can be changed into a prime (157663271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1522 + ... + 17822.

It is an arithmetic number, because the mean of its divisors is an integer number (6846840).

Almost surely, 2^157663272 is an apocalyptic number.

157663272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157663272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219098880).

157663272 is an abundant number, since it is smaller than the sum of its proper divisors (280534488).

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

157663272 is a wasteful number, since it uses less digits than its factorization.

157663272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16354 (or 16350 counting only the distinct ones).

The product of its digits is 105840, while the sum is 39.

The square root of 157663272 is about 12556.4036252424. The cubic root of 157663272 is about 540.2276954720.

The spelling of 157663272 in words is "one hundred fifty-seven million, six hundred sixty-three thousand, two hundred seventy-two".