30420620 has 12 divisors (see below), whose sum is σ = 63883344. Its totient is φ = 12168240.

The previous prime is 30420619. The next prime is 30420659. The reversal of 30420620 is 2602403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 760496 + ... + 760535.

It is an arithmetic number, because the mean of its divisors is an integer number (5323612).

Almost surely, 2^30420620 is an apocalyptic number.

It is an amenable number.

30420620 is an abundant number, since it is smaller than the sum of its proper divisors (33462724).

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

30420620 is a wasteful number, since it uses less digits than its factorization.

30420620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521040 (or 1521038 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 30420620 is about 5515.4890988923. The cubic root of 30420620 is about 312.1686984899.

The spelling of 30420620 in words is "thirty million, four hundred twenty thousand, six hundred twenty".