20212608 has 64 divisors (see below), whose sum is σ = 57834000. Its totient is φ = 6217728.

The previous prime is 20212603. The next prime is 20212639. The reversal of 20212608 is 80621202.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212603) 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, 2968 + ... + 7016.

Almost surely, 2^20212608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20212608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28917000).

20212608 is an abundant number, since it is smaller than the sum of its proper divisors (37621392).

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

20212608 is a wasteful number, since it uses less digits than its factorization.

20212608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4079 (or 4067 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 20212608 is about 4495.8434136433. The cubic root of 20212608 is about 272.4002182157.

The spelling of 20212608 in words is "twenty million, two hundred twelve thousand, six hundred eight".