30753020 has 24 divisors (see below), whose sum is σ = 67981200. Its totient is φ = 11653632.

The previous prime is 30752989. The next prime is 30753043. The reversal of 30753020 is 2035703.

It is a super-3 number, since 3×30753020³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 30752983 and 30753001.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 40085 + ... + 40844.

It is an arithmetic number, because the mean of its divisors is an integer number (2832550).

Almost surely, 2^30753020 is an apocalyptic number.

It is an amenable number.

30753020 is an abundant number, since it is smaller than the sum of its proper divisors (37228180).

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

30753020 is a wasteful number, since it uses less digits than its factorization.

30753020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80957 (or 80955 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 20.

The square root of 30753020 is about 5545.5405507489. The cubic root of 30753020 is about 313.3015837253.

Adding to 30753020 its reverse (2035703), we get a palindrome (32788723).

The spelling of 30753020 in words is "thirty million, seven hundred fifty-three thousand, twenty".