21885102 has 12 divisors (see below), whose sum is σ = 47417760. Its totient is φ = 7295028.

The previous prime is 21885091. The next prime is 21885107. The reversal of 21885102 is 20158812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21885107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 607902 + ... + 607937.

It is an arithmetic number, because the mean of its divisors is an integer number (3951480).

Almost surely, 2^21885102 is an apocalyptic number.

21885102 is an abundant number, since it is smaller than the sum of its proper divisors (25532658).

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

21885102 is a wasteful number, since it uses less digits than its factorization.

21885102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215847 (or 1215844 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 21885102 is about 4678.1515580408. The cubic root of 21885102 is about 279.7152803071.

The spelling of 21885102 in words is "twenty-one million, eight hundred eighty-five thousand, one hundred two".