30555930 has 32 divisors (see below), whose sum is σ = 73483200. Its totient is φ = 8131712.

The previous prime is 30555901. The next prime is 30555961. The reversal of 30555930 is 3955503.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23641 + ... + 24899.

It is an arithmetic number, because the mean of its divisors is an integer number (2296350).

Almost surely, 2^30555930 is an apocalyptic number.

30555930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30555930 is an abundant number, since it is smaller than the sum of its proper divisors (42927270).

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

30555930 is a wasteful number, since it uses less digits than its factorization.

30555930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2078.

The product of its (nonzero) digits is 10125, while the sum is 30.

The square root of 30555930 is about 5527.7418535963. The cubic root of 30555930 is about 312.6308529337.

The spelling of 30555930 in words is "thirty million, five hundred fifty-five thousand, nine hundred thirty".