30466820 has 24 divisors (see below), whose sum is σ = 66187800. Its totient is φ = 11766272.

The previous prime is 30466811. The next prime is 30466853. The reversal of 30466820 is 2866403.

It can be written as a sum of positive squares in 4 ways, for example, as 18496 + 30448324 = 136^2 + 5518^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

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, 25685 + ... + 26844.

It is an arithmetic number, because the mean of its divisors is an integer number (2757825).

Almost surely, 2^30466820 is an apocalyptic number.

It is an amenable number.

30466820 is an abundant number, since it is smaller than the sum of its proper divisors (35720980).

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

30466820 is a wasteful number, since it uses less digits than its factorization.

30466820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52567 (or 52565 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 30466820 is about 5519.6757151123. The cubic root of 30466820 is about 312.3266494565.

The spelling of 30466820 in words is "thirty million, four hundred sixty-six thousand, eight hundred twenty".