30093921 has 48 divisors (see below), whose sum is σ = 51979200. Its totient is φ = 16536960.

The previous prime is 30093887. The next prime is 30093949. The reversal of 30093921 is 12939003.

It is not a de Polignac number, because 30093921 - 2⁹ = 30093409 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30093971) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 86055 + ... + 86403.

It is an arithmetic number, because the mean of its divisors is an integer number (1082900).

Almost surely, 2^30093921 is an apocalyptic number.

It is an amenable number.

30093921 is a deficient number, since it is larger than the sum of its proper divisors (21885279).

30093921 is a wasteful number, since it uses less digits than its factorization.

30093921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 30093921 is about 5485.7926501099. The cubic root of 30093921 is about 311.0471732222.

The spelling of 30093921 in words is "thirty million, ninety-three thousand, nine hundred twenty-one".