16157940 has 48 divisors (see below), whose sum is σ = 45505152. Its totient is φ = 4283776.

The previous prime is 16157929. The next prime is 16157941. The reversal of 16157940 is 4975161.

It is a super-2 number, since 2×16157940² = 522158050087200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16157941) 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, 11137 + ... + 12503.

It is an arithmetic number, because the mean of its divisors is an integer number (948024).

Almost surely, 2^16157940 is an apocalyptic number.

16157940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16157940 is an abundant number, since it is smaller than the sum of its proper divisors (29347212).

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

16157940 is a wasteful number, since it uses less digits than its factorization.

16157940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576 (or 1574 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 16157940 is about 4019.6940182059. The cubic root of 16157940 is about 252.8106296938.

The spelling of 16157940 in words is "sixteen million, one hundred fifty-seven thousand, nine hundred forty".