14621640 has 192 divisors, whose sum is σ = 51710400. Its totient is φ = 3294720.

The previous prime is 14621617. The next prime is 14621687. The reversal of 14621640 is 4612641.

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 14621640.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 275854 + ... + 275906.

It is an arithmetic number, because the mean of its divisors is an integer number (269325).

Almost surely, 2^14621640 is an apocalyptic number.

14621640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 14621640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25855200).

14621640 is an abundant number, since it is smaller than the sum of its proper divisors (37088760).

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

14621640 is a wasteful number, since it uses less digits than its factorization.

14621640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 14621640 is about 3823.8253098174. The cubic root of 14621640 is about 244.5299330619.

The spelling of 14621640 in words is "fourteen million, six hundred twenty-one thousand, six hundred forty".