30796640 has 96 divisors (see below), whose sum is σ = 85929984. Its totient is φ = 10206720.

The previous prime is 30796631. The next prime is 30796669. The reversal of 30796640 is 4669703.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 30796640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34277 + ... + 35163.

It is an arithmetic number, because the mean of its divisors is an integer number (895104).

Almost surely, 2^30796640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30796640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42964992).

30796640 is an abundant number, since it is smaller than the sum of its proper divisors (55133344).

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

30796640 is a wasteful number, since it uses less digits than its factorization.

30796640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940 (or 932 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 30796640 is about 5549.4720469609. The cubic root of 30796640 is about 313.4496424503.

The spelling of 30796640 in words is "thirty million, seven hundred ninety-six thousand, six hundred forty".