30990450 has 24 divisors (see below), whose sum is σ = 76856688. Its totient is φ = 8264080.

The previous prime is 30990419. The next prime is 30990493. The reversal of 30990450 is 5409903.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103152 + ... + 103451.

It is an arithmetic number, because the mean of its divisors is an integer number (3202362).

Almost surely, 2^30990450 is an apocalyptic number.

30990450 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30990450 is an abundant number, since it is smaller than the sum of its proper divisors (45866238).

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

30990450 is a wasteful number, since it uses less digits than its factorization.

30990450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206618 (or 206613 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 30990450 is about 5566.9066814525. The cubic root of 30990450 is about 314.1058036623.

The spelling of 30990450 in words is "thirty million, nine hundred ninety thousand, four hundred fifty".