30182920 has 16 divisors (see below), whose sum is σ = 67911660. Its totient is φ = 12073152.

The previous prime is 30182891. The next prime is 30182921. The reversal of 30182920 is 2928103.

It can be written as a sum of positive squares in 2 ways, for example, as 28068804 + 2114116 = 5298^2 + 1454^2 .

It is a super-2 number, since 2×30182920² = 1822017319452800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30182921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377247 + ... + 377326.

Almost surely, 2^30182920 is an apocalyptic number.

It is an amenable number.

30182920 is an abundant number, since it is smaller than the sum of its proper divisors (37728740).

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

30182920 is a wasteful number, since it uses less digits than its factorization.

30182920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754584 (or 754580 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 30182920 is about 5493.8984337172. The cubic root of 30182920 is about 311.3534991251.

The spelling of 30182920 in words is "thirty million, one hundred eighty-two thousand, nine hundred twenty".