16139528 has 16 divisors (see below), whose sum is σ = 32041980. Its totient is φ = 7595008.

The previous prime is 16139503. The next prime is 16139581. The reversal of 16139528 is 82593161.

It can be written as a sum of positive squares in 2 ways, for example, as 13118884 + 3020644 = 3622^2 + 1738^2 .

It is a congruent number.

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, 59201 + ... + 59472.

Almost surely, 2^16139528 is an apocalyptic number.

It is an amenable number.

16139528 is a deficient number, since it is larger than the sum of its proper divisors (15902452).

16139528 is a wasteful number, since it uses less digits than its factorization.

16139528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118696 (or 118692 counting only the distinct ones).

The product of its digits is 12960, while the sum is 35.

The square root of 16139528 is about 4017.4031413340. The cubic root of 16139528 is about 252.7145671498.

The spelling of 16139528 in words is "sixteen million, one hundred thirty-nine thousand, five hundred twenty-eight".