16157644 has 12 divisors (see below), whose sum is σ = 28526904. Its totient is φ = 8007104.

The previous prime is 16157639. The next prime is 16157699. The reversal of 16157644 is 44675161.

It is a super-2 number, since 2×16157644² = 522138919261472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17422 + ... + 18325.

It is an arithmetic number, because the mean of its divisors is an integer number (2377242).

Almost surely, 2^16157644 is an apocalyptic number.

It is an amenable number.

16157644 is a deficient number, since it is larger than the sum of its proper divisors (12369260).

16157644 is a wasteful number, since it uses less digits than its factorization.

16157644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35864 (or 35862 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 16157644 is about 4019.6571993144. The cubic root of 16157644 is about 252.8090859243.

The spelling of 16157644 in words is "sixteen million, one hundred fifty-seven thousand, six hundred forty-four".