20425884 has 24 divisors (see below), whose sum is σ = 47874960. Its totient is φ = 6777984.

The previous prime is 20425883. The next prime is 20425897. The reversal of 20425884 is 48852402.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20425883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 969 + ... + 6464.

It is an arithmetic number, because the mean of its divisors is an integer number (1994790).

Almost surely, 2^20425884 is an apocalyptic number.

It is an amenable number.

20425884 is an abundant number, since it is smaller than the sum of its proper divisors (27449076).

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

20425884 is a wasteful number, since it uses less digits than its factorization.

20425884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7669 (or 7667 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 33.

The square root of 20425884 is about 4519.5004148689. The cubic root of 20425884 is about 273.3549569779.

The spelling of 20425884 in words is "twenty million, four hundred twenty-five thousand, eight hundred eighty-four".