30472290 has 24 divisors (see below), whose sum is σ = 79228188. Its totient is φ = 8125920.

The previous prime is 30472289. The next prime is 30472319. The reversal of 30472290 is 9227403.

30472290 is a `hidden beast` number, since 304 + 72 + 290 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 30239001 + 233289 = 5499^2 + 483^2 .

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, 169201 + ... + 169380.

Almost surely, 2^30472290 is an apocalyptic number.

30472290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30472290 is an abundant number, since it is smaller than the sum of its proper divisors (48755898).

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

30472290 is a wasteful number, since it uses less digits than its factorization.

30472290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338594 (or 338591 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 30472290 is about 5520.1711929976. The cubic root of 30472290 is about 312.3453400029.

Adding to 30472290 its reverse (9227403), we get a palindrome (39699693).

The spelling of 30472290 in words is "thirty million, four hundred seventy-two thousand, two hundred ninety".