30452020 has 12 divisors (see below), whose sum is σ = 63949284. Its totient is φ = 12180800.

The previous prime is 30451961. The next prime is 30452027. The reversal of 30452020 is 2025403.

It can be written as a sum of positive squares in 2 ways, for example, as 5731236 + 24720784 = 2394^2 + 4972^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30451985 and 30452003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30452027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 761281 + ... + 761320.

It is an arithmetic number, because the mean of its divisors is an integer number (5329107).

Almost surely, 2^30452020 is an apocalyptic number.

It is an amenable number.

30452020 is an abundant number, since it is smaller than the sum of its proper divisors (33497264).

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

30452020 is a wasteful number, since it uses less digits than its factorization.

30452020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522610 (or 1522608 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 30452020 is about 5518.3348937882. The cubic root of 30452020 is about 312.2760678390.

Adding to 30452020 its reverse (2025403), we get a palindrome (32477423).

The spelling of 30452020 in words is "thirty million, four hundred fifty-two thousand, twenty".