30243690 has 24 divisors (see below), whose sum is σ = 78633828. Its totient is φ = 8064960.

The previous prime is 30243683. The next prime is 30243757. The reversal of 30243690 is 9634203.

It can be written as a sum of positive squares in 2 ways, for example, as 29582721 + 660969 = 5439^2 + 813^2 .

It is a super-2 number, since 2×30243690² = 1829361569632200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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, 167931 + ... + 168110.

Almost surely, 2^30243690 is an apocalyptic number.

30243690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30243690 is an abundant number, since it is smaller than the sum of its proper divisors (48390138).

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

30243690 is a wasteful number, since it uses less digits than its factorization.

30243690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336054 (or 336051 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 30243690 is about 5499.4263337188. The cubic root of 30243690 is about 311.5623177539.

Adding to 30243690 its reverse (9634203), we get a palindrome (39877893).

The spelling of 30243690 in words is "thirty million, two hundred forty-three thousand, six hundred ninety".