30528420 has 48 divisors (see below), whose sum is σ = 92057280. Its totient is φ = 7514496.

The previous prime is 30528373. The next prime is 30528437. The reversal of 30528420 is 2482503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18790 + ... + 20349.

It is an arithmetic number, because the mean of its divisors is an integer number (1917860).

Almost surely, 2^30528420 is an apocalyptic number.

30528420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30528420 is an abundant number, since it is smaller than the sum of its proper divisors (61528860).

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

30528420 is a wasteful number, since it uses less digits than its factorization.

30528420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39164 (or 39162 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 30528420 is about 5525.2529353868. The cubic root of 30528420 is about 312.5370025518.

The spelling of 30528420 in words is "thirty million, five hundred twenty-eight thousand, four hundred twenty".