30021532420 has 48 divisors (see below), whose sum is σ = 69156674496. Its totient is φ = 10856592000.

The previous prime is 30021532361. The next prime is 30021532441. The reversal of 30021532420 is 2423512003.

It is a super-2 number, since 2×30021532420² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 30021532391 and 30021532400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337146 + ... + 416785.

It is an arithmetic number, because the mean of its divisors is an integer number (1440764052).

Almost surely, 2^30021532420 is an apocalyptic number.

It is an amenable number.

30021532420 is an abundant number, since it is smaller than the sum of its proper divisors (39135142076).

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

30021532420 is a wasteful number, since it uses less digits than its factorization.

30021532420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754132 (or 754130 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The spelling of 30021532420 in words is "thirty billion, twenty-one million, five hundred thirty-two thousand, four hundred twenty".