30479620 has 12 divisors (see below), whose sum is σ = 64007244. Its totient is φ = 12191840.

The previous prime is 30479599. The next prime is 30479621. The reversal of 30479620 is 2697403.

It can be written as a sum of positive squares in 2 ways, for example, as 23677956 + 6801664 = 4866^2 + 2608^2 .

It is not an unprimeable number, because it can be changed into a prime (30479621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 761971 + ... + 762010.

It is an arithmetic number, because the mean of its divisors is an integer number (5333937).

Almost surely, 2^30479620 is an apocalyptic number.

It is an amenable number.

30479620 is an abundant number, since it is smaller than the sum of its proper divisors (33527624).

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

30479620 is a wasteful number, since it uses less digits than its factorization.

30479620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523990 (or 1523988 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 30479620 is about 5520.8350817607. The cubic root of 30479620 is about 312.3703825119.

The spelling of 30479620 in words is "thirty million, four hundred seventy-nine thousand, six hundred twenty".