16624340 has 12 divisors (see below), whose sum is σ = 34911156. Its totient is φ = 6649728.

The previous prime is 16624327. The next prime is 16624367. The reversal of 16624340 is 4342661.

It can be written as a sum of positive squares in 2 ways, for example, as 12759184 + 3865156 = 3572^2 + 1966^2 .

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, 415589 + ... + 415628.

It is an arithmetic number, because the mean of its divisors is an integer number (2909263).

Almost surely, 2^16624340 is an apocalyptic number.

16624340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16624340 is an abundant number, since it is smaller than the sum of its proper divisors (18286816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16624340 is a wasteful number, since it uses less digits than its factorization.

16624340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831226 (or 831224 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 16624340 is about 4077.2956723789. The cubic root of 16624340 is about 255.2200586625.

The spelling of 16624340 in words is "sixteen million, six hundred twenty-four thousand, three hundred forty".