30648690 has 24 divisors (see below), whose sum is σ = 79686828. Its totient is φ = 8172960.

The previous prime is 30648661. The next prime is 30648697. The reversal of 30648690 is 9684603.

30648690 is a `hidden beast` number, since 3 + 0 + 648 + 6 + 9 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 30503529 + 145161 = 5523^2 + 381^2 .

It is a super-2 number, since 2×30648690² = 1878684397432200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30648697) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170181 + ... + 170360.

Almost surely, 2^30648690 is an apocalyptic number.

30648690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30648690 is an abundant number, since it is smaller than the sum of its proper divisors (49038138).

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

30648690 is a wasteful number, since it uses less digits than its factorization.

30648690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340554 (or 340551 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 30648690 is about 5536.1259017475. The cubic root of 30648690 is about 312.9468891570.

The spelling of 30648690 in words is "thirty million, six hundred forty-eight thousand, six hundred ninety".