16249920 has 56 divisors (see below), whose sum is σ = 51596544. Its totient is φ = 4333056.

The previous prime is 16249901. The next prime is 16249927. The reversal of 16249920 is 2994261.

It is not an unprimeable number, because it can be changed into a prime (16249927) by changing a digit.

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, 7504 + ... + 9423.

Almost surely, 2^16249920 is an apocalyptic number.

16249920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16249920 is an abundant number, since it is smaller than the sum of its proper divisors (35346624).

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

16249920 is a wasteful number, since it uses less digits than its factorization.

16249920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16947 (or 16937 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 16249920 is about 4031.1189513583. The cubic root of 16249920 is about 253.2894352992.

The spelling of 16249920 in words is "sixteen million, two hundred forty-nine thousand, nine hundred twenty".