21887102 has 8 divisors (see below), whose sum is σ = 32851656. Its totient is φ = 10936552.

The previous prime is 21887081. The next prime is 21887119. The reversal of 21887102 is 20178812.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 2393 + ... + 7035.

It is an arithmetic number, because the mean of its divisors is an integer number (4106457).

Almost surely, 2^21887102 is an apocalyptic number.

21887102 is a deficient number, since it is larger than the sum of its proper divisors (10964554).

21887102 is a wasteful number, since it uses less digits than its factorization.

21887102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7002.

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 21887102 is about 4678.3653127989. The cubic root of 21887102 is about 279.7238007688.

The spelling of 21887102 in words is "twenty-one million, eight hundred eighty-seven thousand, one hundred two".