30898772 has 12 divisors (see below), whose sum is σ = 54989760. Its totient is φ = 15187416.

The previous prime is 30898759. The next prime is 30898781. The reversal of 30898772 is 27789803.

It is a happy number.

It is a super-2 number, since 2×30898772² = 1909468222215968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65228 + ... + 65699.

It is an arithmetic number, because the mean of its divisors is an integer number (4582480).

Almost surely, 2^30898772 is an apocalyptic number.

It is an amenable number.

30898772 is a deficient number, since it is larger than the sum of its proper divisors (24090988).

30898772 is a wasteful number, since it uses less digits than its factorization.

30898772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130990 (or 130988 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 30898772 is about 5558.6663868234. Note that the first 3 decimals coincide. The cubic root of 30898772 is about 313.7957615405.

The spelling of 30898772 in words is "thirty million, eight hundred ninety-eight thousand, seven hundred seventy-two".