21384102 has 8 divisors (see below), whose sum is σ = 42768216. Its totient is φ = 7128032.

The previous prime is 21384073. The next prime is 21384151. The reversal of 21384102 is 20148312.

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

21384102 is an admirable number.

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, 1782003 + ... + 1782014.

It is an arithmetic number, because the mean of its divisors is an integer number (5346027).

Almost surely, 2^21384102 is an apocalyptic number.

21384102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21384102 is a wasteful number, since it uses less digits than its factorization.

21384102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3564022.

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

The square root of 21384102 is about 4624.2947570413. The cubic root of 21384102 is about 277.5643418696.

The spelling of 21384102 in words is "twenty-one million, three hundred eighty-four thousand, one hundred two".