30146520 has 32 divisors (see below), whose sum is σ = 90439920. Its totient is φ = 8039040.

The previous prime is 30146471. The next prime is 30146531. The reversal of 30146520 is 2564103.

It is a happy number.

It is a super-2 number, since 2×30146520² = 1817625336220800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125491 + ... + 125730.

Almost surely, 2^30146520 is an apocalyptic number.

30146520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30146520 is an abundant number, since it is smaller than the sum of its proper divisors (60293400).

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

30146520 is a wasteful number, since it uses less digits than its factorization.

30146520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251235 (or 251231 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 30146520 is about 5490.5846683209. The cubic root of 30146520 is about 311.2282867387.

The spelling of 30146520 in words is "thirty million, one hundred forty-six thousand, five hundred twenty".