16039660 has 72 divisors (see below), whose sum is σ = 42230160. Its totient is φ = 5072256.

The previous prime is 16039649. The next prime is 16039711. The reversal of 16039660 is 6693061.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12111 + ... + 13369.

It is an arithmetic number, because the mean of its divisors is an integer number (586530).

Almost surely, 2^16039660 is an apocalyptic number.

16039660 is a gapful number since it is divisible by the number (10) 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 16039660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21115080).

16039660 is an abundant number, since it is smaller than the sum of its proper divisors (26190500).

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

16039660 is a wasteful number, since it uses less digits than its factorization.

16039660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295 (or 1286 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 16039660 is about 4004.9544317008. The cubic root of 16039660 is about 252.1922401421.

The spelling of 16039660 in words is "sixteen million, thirty-nine thousand, six hundred sixty".