30730420 has 24 divisors (see below), whose sum is σ = 73753344. Its totient is φ = 10536096.

The previous prime is 30730417. The next prime is 30730451. The reversal of 30730420 is 2403703.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109612 + ... + 109891.

It is an arithmetic number, because the mean of its divisors is an integer number (3073056).

Almost surely, 2^30730420 is an apocalyptic number.

It is an amenable number.

30730420 is an abundant number, since it is smaller than the sum of its proper divisors (43022924).

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

30730420 is a wasteful number, since it uses less digits than its factorization.

30730420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219519 (or 219517 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 30730420 is about 5543.5025029308. The cubic root of 30730420 is about 313.2248178121.

The spelling of 30730420 in words is "thirty million, seven hundred thirty thousand, four hundred twenty".