30491552 has 96 divisors (see below), whose sum is σ = 76148352. Its totient is φ = 11695104.

The previous prime is 30491479. The next prime is 30491567. The reversal of 30491552 is 25519403.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107603 + ... + 107885.

It is an arithmetic number, because the mean of its divisors is an integer number (793212).

Almost surely, 2^30491552 is an apocalyptic number.

30491552 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30491552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38074176).

30491552 is an abundant number, since it is smaller than the sum of its proper divisors (45656800).

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

30491552 is a wasteful number, since it uses less digits than its factorization.

30491552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 30491552 is about 5521.9156096413. The cubic root of 30491552 is about 312.4111388942.

The spelling of 30491552 in words is "thirty million, four hundred ninety-one thousand, five hundred fifty-two".