16624490 has 8 divisors (see below), whose sum is σ = 29924100. Its totient is φ = 6649792.

The previous prime is 16624481. The next prime is 16624501. The reversal of 16624490 is 9442661.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14341369 + 2283121 = 3787^2 + 1511^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 831215 + ... + 831234.

Almost surely, 2^16624490 is an apocalyptic number.

16624490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16624490 is a deficient number, since it is larger than the sum of its proper divisors (13299610).

16624490 is a wasteful number, since it uses less digits than its factorization.

16624490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662456.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 16624490 is about 4077.3140668828. The cubic root of 16624490 is about 255.2208262698.

The spelling of 16624490 in words is "sixteen million, six hundred twenty-four thousand, four hundred ninety".