30891364 has 27 divisors (see below), whose sum is σ = 63044793. Its totient is φ = 13205808.

The previous prime is 30891349. The next prime is 30891391. The reversal of 30891364 is 46319803.

The square root of 30891364 is 5558.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 20702500 + 10188864 = 4550^2 + 3192^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 77614 + ... + 78010.

Almost surely, 2^30891364 is an apocalyptic number.

30891364 is the 5558-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30891364

30891364 is an abundant number, since it is smaller than the sum of its proper divisors (32153429).

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

30891364 is an equidigital number, since it uses as much as digits as its factorization.

30891364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The cubic root of 30891364 is about 313.7706819591.

The spelling of 30891364 in words is "thirty million, eight hundred ninety-one thousand, three hundred sixty-four".