16630440 has 32 divisors (see below), whose sum is σ = 49891680. Its totient is φ = 4434752.

The previous prime is 16630429. The next prime is 16630459. The reversal of 16630440 is 4403661.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 16630440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69174 + ... + 69413.

It is an arithmetic number, because the mean of its divisors is an integer number (1559115).

Almost surely, 2^16630440 is an apocalyptic number.

16630440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16630440 is an abundant number, since it is smaller than the sum of its proper divisors (33261240).

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

16630440 is a wasteful number, since it uses less digits than its factorization.

16630440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138601 (or 138597 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 16630440 is about 4078.0436486139. The cubic root of 16630440 is about 255.2512709689.

The spelling of 16630440 in words is "sixteen million, six hundred thirty thousand, four hundred forty".