16644052 has 6 divisors (see below), whose sum is σ = 29127098. Its totient is φ = 8322024.

The previous prime is 16644049. The next prime is 16644059. The reversal of 16644052 is 25044661.

It can be written as a sum of positive squares in only one way, i.e., 16613776 + 30276 = 4076^2 + 174^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16644052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16644059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2080503 + ... + 2080510.

Almost surely, 2^16644052 is an apocalyptic number.

It is an amenable number.

16644052 is a deficient number, since it is larger than the sum of its proper divisors (12483046).

16644052 is a wasteful number, since it uses less digits than its factorization.

16644052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4161017 (or 4161015 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 16644052 is about 4079.7122447545. The cubic root of 16644052 is about 255.3208929548.

It can be divided in two parts, 166440 and 52, that multiplied together give a triangular number (8654880 = T₄₁₆₀).

The spelling of 16644052 in words is "sixteen million, six hundred forty-four thousand, fifty-two".