16529139 has 24 divisors (see below), whose sum is σ = 26208000. Its totient is φ = 9955440.

The previous prime is 16529137. The next prime is 16529143. The reversal of 16529139 is 93192561.

It is not a de Polignac number, because 16529139 - 2¹ = 16529137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16529137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19282 + ... + 20120.

It is an arithmetic number, because the mean of its divisors is an integer number (1092000).

Almost surely, 2^16529139 is an apocalyptic number.

16529139 is a deficient number, since it is larger than the sum of its proper divisors (9678861).

16529139 is a wasteful number, since it uses less digits than its factorization.

16529139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055 (or 1052 counting only the distinct ones).

The product of its digits is 14580, while the sum is 36.

The square root of 16529139 is about 4065.6043831145. The cubic root of 16529139 is about 254.7319443860.

The spelling of 16529139 in words is "sixteen million, five hundred twenty-nine thousand, one hundred thirty-nine".