21675102 has 16 divisors (see below), whose sum is σ = 45900432. Its totient is φ = 6800000.

The previous prime is 21675091. The next prime is 21675109. The reversal of 21675102 is 20157612.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21675109) 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, 106149 + ... + 106352.

It is an arithmetic number, because the mean of its divisors is an integer number (2868777).

Almost surely, 2^21675102 is an apocalyptic number.

21675102 is an abundant number, since it is smaller than the sum of its proper divisors (24225330).

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

21675102 is a wasteful number, since it uses less digits than its factorization.

21675102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212523.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 21675102 is about 4655.6526932322. The cubic root of 21675102 is about 278.8177275823.

The spelling of 21675102 in words is "twenty-one million, six hundred seventy-five thousand, one hundred two".