30921114 has 32 divisors (see below), whose sum is σ = 70874496. Its totient is φ = 8809920.

The previous prime is 30921089. The next prime is 30921119. The reversal of 30921114 is 41112903.

It is a super-2 number, since 2×30921114² = 1912230582001992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (30921119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18564 + ... + 20160.

It is an arithmetic number, because the mean of its divisors is an integer number (2214828).

Almost surely, 2^30921114 is an apocalyptic number.

30921114 is an abundant number, since it is smaller than the sum of its proper divisors (39953382).

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

30921114 is a wasteful number, since it uses less digits than its factorization.

30921114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2070.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 30921114 is about 5560.6756783686. The cubic root of 30921114 is about 313.8713755035.

The spelling of 30921114 in words is "thirty million, nine hundred twenty-one thousand, one hundred fourteen".