20140408 has 16 divisors (see below), whose sum is σ = 38281680. Its totient is φ = 9931968.

The previous prime is 20140363. The next prime is 20140411. The reversal of 20140408 is 80404102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16660 + ... + 17827.

It is an arithmetic number, because the mean of its divisors is an integer number (2392605).

Almost surely, 2^20140408 is an apocalyptic number.

It is an amenable number.

20140408 is a deficient number, since it is larger than the sum of its proper divisors (18141272).

20140408 is a wasteful number, since it uses less digits than its factorization.

20140408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34566 (or 34562 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 20140408 is about 4487.8065911980. The cubic root of 20140408 is about 272.0754908687.

The spelling of 20140408 in words is "twenty million, one hundred forty thousand, four hundred eight".