30642930 has 24 divisors (see below), whose sum is σ = 79671852. Its totient is φ = 8171424.

The previous prime is 30642929. The next prime is 30643021. The reversal of 30642930 is 3924603.

It can be written as a sum of positive squares in 2 ways, for example, as 29062881 + 1580049 = 5391^2 + 1257^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30642894 and 30642903.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170149 + ... + 170328.

Almost surely, 2^30642930 is an apocalyptic number.

30642930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30642930 is an abundant number, since it is smaller than the sum of its proper divisors (49028922).

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

30642930 is a wasteful number, since it uses less digits than its factorization.

30642930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340490 (or 340487 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 30642930 is about 5535.6056579204. The cubic root of 30642930 is about 312.9272832400.

The spelling of 30642930 in words is "thirty million, six hundred forty-two thousand, nine hundred thirty".