30921102 has 20 divisors (see below), whose sum is σ = 69286536. Its totient is φ = 10306980.

The previous prime is 30921089. The next prime is 30921119. The reversal of 30921102 is 20112903.

It is a happy number.

It is a super-2 number, since 2×30921102² = 1912229097788808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 95274 + ... + 95597.

Almost surely, 2^30921102 is an apocalyptic number.

30921102 is an abundant number, since it is smaller than the sum of its proper divisors (38365434).

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

30921102 is a wasteful number, since it uses less digits than its factorization.

30921102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190885 (or 190876 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 30921102 is about 5560.6745993629. The cubic root of 30921102 is about 313.8713349007.

The spelling of 30921102 in words is "thirty million, nine hundred twenty-one thousand, one hundred two".