20884404 has 12 divisors (see below), whose sum is σ = 48730304. Its totient is φ = 6961464.

The previous prime is 20884399. The next prime is 20884427. The reversal of 20884404 is 40448802.

It is a tau number, because it is divible by the number of its divisors (12).

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, 870172 + ... + 870195.

Almost surely, 2^20884404 is an apocalyptic number.

It is an amenable number.

20884404 is an abundant number, since it is smaller than the sum of its proper divisors (27845900).

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

20884404 is a wasteful number, since it uses less digits than its factorization.

20884404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740374 (or 1740372 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 30.

The square root of 20884404 is about 4569.9457327194. The cubic root of 20884404 is about 275.3852627668.

The spelling of 20884404 in words is "twenty million, eight hundred eighty-four thousand, four hundred four".