30898928 has 40 divisors (see below), whose sum is σ = 64763712. Its totient is φ = 14225408.

The previous prime is 30898873. The next prime is 30898937. The reversal of 30898928 is 82989803.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (47).

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, 11576 + ... + 13992.

Almost surely, 2^30898928 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 30898928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32381856).

30898928 is an abundant number, since it is smaller than the sum of its proper divisors (33864784).

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

30898928 is a wasteful number, since it uses less digits than its factorization.

30898928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2489 (or 2483 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 30898928 is about 5558.6804189484. The cubic root of 30898928 is about 313.7962896311.

The spelling of 30898928 in words is "thirty million, eight hundred ninety-eight thousand, nine hundred twenty-eight".