30913456 has 80 divisors (see below), whose sum is σ = 73408000. Its totient is φ = 12317184.

The previous prime is 30913453. The next prime is 30913459. The reversal of 30913456 is 65431903.

It is an interprime number because it is at equal distance from previous prime (30913453) and next prime (30913459).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30913453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155245 + ... + 155443.

It is an arithmetic number, because the mean of its divisors is an integer number (917600).

Almost surely, 2^30913456 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 30913456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36704000).

30913456 is an abundant number, since it is smaller than the sum of its proper divisors (42494544).

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

30913456 is a wasteful number, since it uses less digits than its factorization.

30913456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 30913456 is about 5559.9870503446. The cubic root of 30913456 is about 313.8454619756.

The spelling of 30913456 in words is "thirty million, nine hundred thirteen thousand, four hundred fifty-six".