30312730 has 64 divisors (see below), whose sum is σ = 65710080. Its totient is φ = 9849600.

The previous prime is 30312713. The next prime is 30312749. The reversal of 30312730 is 3721303.

It is a junction number, because it is equal to n+sod(n) for n = 30312698 and 30312707.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132256 + ... + 132484.

It is an arithmetic number, because the mean of its divisors is an integer number (1026720).

Almost surely, 2^30312730 is an apocalyptic number.

30312730 is an abundant number, since it is smaller than the sum of its proper divisors (35397350).

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

30312730 is a wasteful number, since it uses less digits than its factorization.

30312730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335.

The product of its (nonzero) digits is 378, while the sum is 19.

The square root of 30312730 is about 5505.6997738707. The cubic root of 30312730 is about 311.7992147214.

The spelling of 30312730 in words is "thirty million, three hundred twelve thousand, seven hundred thirty".