20457532628 has 48 divisors (see below), whose sum is σ = 39051373200. Its totient is φ = 9320832000.

The previous prime is 20457532621. The next prime is 20457532633. The reversal of 20457532628 is 82623575402.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 201980944 + 20255551684 = 14212^2 + 142322^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20457532621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1827368 + ... + 1838528.

It is an arithmetic number, because the mean of its divisors is an integer number (813570275).

Almost surely, 2^20457532628 is an apocalyptic number.

It is an amenable number.

20457532628 is a deficient number, since it is larger than the sum of its proper divisors (18593840572).

20457532628 is a wasteful number, since it uses less digits than its factorization.

20457532628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11628 (or 11626 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 44.

The spelling of 20457532628 in words is "twenty billion, four hundred fifty-seven million, five hundred thirty-two thousand, six hundred twenty-eight".