30479930 has 16 divisors (see below), whose sum is σ = 59084424. Its totient is φ = 11254080.

The previous prime is 30479927. The next prime is 30479947. The reversal of 30479930 is 3997403.

It can be written as a sum of positive squares in 4 ways, for example, as 24433249 + 6046681 = 4943^2 + 2459^2 .

It is a super-2 number, since 2×30479930² = 1858052265609800, which contains 22 as substring.

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, 117101 + ... + 117360.

Almost surely, 2^30479930 is an apocalyptic number.

30479930 is a deficient number, since it is larger than the sum of its proper divisors (28604494).

30479930 is a wasteful number, since it uses less digits than its factorization.

30479930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234481.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 30479930 is about 5520.8631571521. The cubic root of 30479930 is about 312.3714415199.

The spelling of 30479930 in words is "thirty million, four hundred seventy-nine thousand, nine hundred thirty".