30840492 has 24 divisors (see below), whose sum is σ = 72051952. Its totient is φ = 10267200.

The previous prime is 30840473. The next prime is 30840497. The reversal of 30840492 is 29404803.

It is a happy number.

It is a super-2 number, since 2×30840492² = 1902271893604128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30840497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15642 + ... + 17502.

Almost surely, 2^30840492 is an apocalyptic number.

It is an amenable number.

30840492 is an abundant number, since it is smaller than the sum of its proper divisors (41211460).

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

30840492 is a wasteful number, since it uses less digits than its factorization.

30840492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3249 (or 3247 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 30840492 is about 5553.4216479572. The cubic root of 30840492 is about 313.5983477934.

The spelling of 30840492 in words is "thirty million, eight hundred forty thousand, four hundred ninety-two".