30330740 has 24 divisors (see below), whose sum is σ = 69485472. Its totient is φ = 11029280.

The previous prime is 30330739. The next prime is 30330743. The reversal of 30330740 is 4703303.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30330743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68714 + ... + 69153.

It is an arithmetic number, because the mean of its divisors is an integer number (2895228).

Almost surely, 2^30330740 is an apocalyptic number.

It is an amenable number.

30330740 is an abundant number, since it is smaller than the sum of its proper divisors (39154732).

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

30330740 is a wasteful number, since it uses less digits than its factorization.

30330740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137887 (or 137885 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 20.

The square root of 30330740 is about 5507.3351087436. The cubic root of 30330740 is about 311.8609532725.

The spelling of 30330740 in words is "thirty million, three hundred thirty thousand, seven hundred forty".