20711404 has 12 divisors (see below), whose sum is σ = 41422864. Its totient is φ = 8876304.

The previous prime is 20711401. The next prime is 20711407. The reversal of 20711404 is 40411702.

It is an interprime number because it is at equal distance from previous prime (20711401) and next prime (20711407).

20711404 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20711401) 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 3 ways as a sum of consecutive naturals, for example, 369819 + ... + 369874.

Almost surely, 2^20711404 is an apocalyptic number.

It is an amenable number.

20711404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20711404 is a wasteful number, since it uses less digits than its factorization.

20711404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739704 (or 739702 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 20711404 is about 4550.9783563537. The cubic root of 20711404 is about 274.6227510407.

It can be divided in two parts, 20711 and 404, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 20711404 in words is "twenty million, seven hundred eleven thousand, four hundred four".