30205916 has 24 divisors (see below), whose sum is σ = 57217104. Its totient is φ = 13870080.

The previous prime is 30205859. The next prime is 30205927. The reversal of 30205916 is 61950203.

It is a super-2 number, since 2×30205916² = 1824794722798112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9596 + ... + 12348.

It is an arithmetic number, because the mean of its divisors is an integer number (2384046).

Almost surely, 2^30205916 is an apocalyptic number.

It is an amenable number.

30205916 is a deficient number, since it is larger than the sum of its proper divisors (27011188).

30205916 is a wasteful number, since it uses less digits than its factorization.

30205916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2981 (or 2979 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 30205916 is about 5495.9909024670. The cubic root of 30205916 is about 311.4325512014.

The spelling of 30205916 in words is "thirty million, two hundred five thousand, nine hundred sixteen".