30073572 has 24 divisors (see below), whose sum is σ = 77968800. Its totient is φ = 10024488.

The previous prime is 30073567. The next prime is 30073573. The reversal of 30073572 is 27537003.

30073572 is a `hidden beast` number, since 300 + 7 + 357 + 2 = 666.

It is a super-3 number, since 3×30073572³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (30073573) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 139122 + ... + 139337.

It is an arithmetic number, because the mean of its divisors is an integer number (3248700).

Almost surely, 2^30073572 is an apocalyptic number.

It is an amenable number.

30073572 is an abundant number, since it is smaller than the sum of its proper divisors (47895228).

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

30073572 is a wasteful number, since it uses less digits than its factorization.

30073572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278472 (or 278464 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 27.

The square root of 30073572 is about 5483.9376364069. The cubic root of 30073572 is about 310.9770491364.

The spelling of 30073572 in words is "thirty million, seventy-three thousand, five hundred seventy-two".