16640754 has 24 divisors (see below), whose sum is σ = 36040752. Its totient is φ = 5119920.

The previous prime is 16640731. The next prime is 16640759. The reversal of 16640754 is 45704661.

It is not an unprimeable number, because it can be changed into a prime (16640759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7192 + ... + 9219.

It is an arithmetic number, because the mean of its divisors is an integer number (1501698).

Almost surely, 2^16640754 is an apocalyptic number.

16640754 is an abundant number, since it is smaller than the sum of its proper divisors (19399998).

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

16640754 is a wasteful number, since it uses less digits than its factorization.

16640754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16442 (or 16429 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 16640754 is about 4079.3080295560. The cubic root of 16640754 is about 255.3040279925.

The spelling of 16640754 in words is "sixteen million, six hundred forty thousand, seven hundred fifty-four".