16506452 has 12 divisors (see below), whose sum is σ = 29882580. Its totient is φ = 7968576.

The previous prime is 16506431. The next prime is 16506463. The reversal of 16506452 is 25460561.

It can be written as a sum of positive squares in 2 ways, for example, as 10523536 + 5982916 = 3244^2 + 2446^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 71033 + ... + 71264.

It is an arithmetic number, because the mean of its divisors is an integer number (2490215).

Almost surely, 2^16506452 is an apocalyptic number.

It is an amenable number.

16506452 is a deficient number, since it is larger than the sum of its proper divisors (13376128).

16506452 is a wasteful number, since it uses less digits than its factorization.

16506452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142330 (or 142328 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 16506452 is about 4062.8133109952. The cubic root of 16506452 is about 254.6153472729.

The spelling of 16506452 in words is "sixteen million, five hundred six thousand, four hundred fifty-two".