30745456 has 40 divisors (see below), whose sum is σ = 68440064. Its totient is φ = 13106880.

The previous prime is 30745433. The next prime is 30745499. The reversal of 30745456 is 65454703.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24361 + ... + 25591.

Almost surely, 2^30745456 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 30745456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34220032).

30745456 is an abundant number, since it is smaller than the sum of its proper divisors (37694608).

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

30745456 is a wasteful number, since it uses less digits than its factorization.

30745456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1469 (or 1463 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 30745456 is about 5544.8585193853. The cubic root of 30745456 is about 313.2758951100.

The spelling of 30745456 in words is "thirty million, seven hundred forty-five thousand, four hundred fifty-six".