30405930 has 16 divisors (see below), whose sum is σ = 72974304. Its totient is φ = 8108240.

The previous prime is 30405923. The next prime is 30405937. The reversal of 30405930 is 3950403.

It is an interprime number because it is at equal distance from previous prime (30405923) and next prime (30405937).

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 30405930.

It is not an unprimeable number, because it can be changed into a prime (30405937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506736 + ... + 506795.

It is an arithmetic number, because the mean of its divisors is an integer number (4560894).

Almost surely, 2^30405930 is an apocalyptic number.

30405930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30405930 is an abundant number, since it is smaller than the sum of its proper divisors (42568374).

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

30405930 is a wasteful number, since it uses less digits than its factorization.

30405930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013541.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 30405930 is about 5514.1572338844. The cubic root of 30405930 is about 312.1184420462.

The spelling of 30405930 in words is "thirty million, four hundred five thousand, nine hundred thirty".