16248640 has 28 divisors (see below), whose sum is σ = 38692836. Its totient is φ = 6499328.

The previous prime is 16248623. The next prime is 16248643. The reversal of 16248640 is 4684261.

It can be written as a sum of positive squares in 2 ways, for example, as 10137856 + 6110784 = 3184^2 + 2472^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16248643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25069 + ... + 25708.

It is an arithmetic number, because the mean of its divisors is an integer number (1381887).

Almost surely, 2^16248640 is an apocalyptic number.

16248640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16248640 is an abundant number, since it is smaller than the sum of its proper divisors (22444196).

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

16248640 is an equidigital number, since it uses as much as digits as its factorization.

16248640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50794 (or 50784 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 16248640 is about 4030.9601833806. The cubic root of 16248640 is about 253.2827846205.

The spelling of 16248640 in words is "sixteen million, two hundred forty-eight thousand, six hundred forty".