16139392 has 32 divisors (see below), whose sum is σ = 34048620. Its totient is φ = 7593984.

The previous prime is 16139371. The next prime is 16139407. The reversal of 16139392 is 29393161.

It can be written as a sum of positive squares in 2 ways, for example, as 14561856 + 1577536 = 3816^2 + 1256^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a nialpdrome in base 8.

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, 1533 + ... + 5884.

Almost surely, 2^16139392 is an apocalyptic number.

It is an amenable number.

16139392 is an abundant number, since it is smaller than the sum of its proper divisors (17909228).

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

16139392 is an equidigital number, since it uses as much as digits as its factorization.

16139392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7448 (or 7436 counting only the distinct ones).

The product of its digits is 8748, while the sum is 34.

The square root of 16139392 is about 4017.3862149413. The cubic root of 16139392 is about 252.7138573133.

The spelling of 16139392 in words is "sixteen million, one hundred thirty-nine thousand, three hundred ninety-two".