30894980 has 48 divisors (see below), whose sum is σ = 69189120. Its totient is φ = 11561088.

The previous prime is 30894979. The next prime is 30894989. The reversal of 30894980 is 8949803.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (30894989) 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, 20906 + ... + 22334.

It is an arithmetic number, because the mean of its divisors is an integer number (1441440).

Almost surely, 2^30894980 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 30894980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34594560).

30894980 is an abundant number, since it is smaller than the sum of its proper divisors (38294140).

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

30894980 is a wasteful number, since it uses less digits than its factorization.

30894980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508 (or 1506 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 30894980 is about 5558.3252873505. The cubic root of 30894980 is about 313.7829243291.

The spelling of 30894980 in words is "thirty million, eight hundred ninety-four thousand, nine hundred eighty".