30734970 has 64 divisors (see below), whose sum is σ = 88750080. Its totient is φ = 6654528.

The previous prime is 30734959. The next prime is 30734987. The reversal of 30734970 is 7943703.

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, 139 + ... + 7841.

It is an arithmetic number, because the mean of its divisors is an integer number (1386720).

Almost surely, 2^30734970 is an apocalyptic number.

30734970 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30734970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44375040).

30734970 is an abundant number, since it is smaller than the sum of its proper divisors (58015110).

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

30734970 is a wasteful number, since it uses less digits than its factorization.

30734970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7739.

The product of its (nonzero) digits is 15876, while the sum is 33.

The square root of 30734970 is about 5543.9128781033. The cubic root of 30734970 is about 313.2402759216.

The spelling of 30734970 in words is "thirty million, seven hundred thirty-four thousand, nine hundred seventy".