16939140 has 48 divisors (see below), whose sum is σ = 50222592. Its totient is φ = 4251136.

The previous prime is 16939093. The next prime is 16939147. The reversal of 16939140 is 4193961.

It is not an unprimeable number, because it can be changed into a prime (16939147) 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, 7284 + ... + 9323.

It is an arithmetic number, because the mean of its divisors is an integer number (1046304).

Almost surely, 2^16939140 is an apocalyptic number.

16939140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16939140 is an abundant number, since it is smaller than the sum of its proper divisors (33283452).

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

16939140 is a wasteful number, since it uses less digits than its factorization.

16939140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16636 (or 16634 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 16939140 is about 4115.7186492762. The cubic root of 16939140 is about 256.8209525707.

The spelling of 16939140 in words is "sixteen million, nine hundred thirty-nine thousand, one hundred forty".