16157232 has 200 divisors, whose sum is σ = 57975456. Its totient is φ = 4230144.

The previous prime is 16157227. The next prime is 16157233. The reversal of 16157232 is 23275161.

It is a happy number.

16157232 is a `hidden beast` number, since 1 + 61 + 572 + 32 = 666.

It is a super-2 number, since 2×16157232² = 522112291803648, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 16157196 and 16157205.

It is not an unprimeable number, because it can be changed into a prime (16157233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 117868 + ... + 118004.

Almost surely, 2^16157232 is an apocalyptic number.

16157232 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 16157232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28987728).

16157232 is an abundant number, since it is smaller than the sum of its proper divisors (41818224).

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

16157232 is a wasteful number, since it uses less digits than its factorization.

16157232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 162 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 16157232 is about 4019.6059508365. The cubic root of 16157232 is about 252.8069371327.

It can be divided in two parts, 161572 and 32, that added together give a square (161604 = 402²).

The spelling of 16157232 in words is "sixteen million, one hundred fifty-seven thousand, two hundred thirty-two".