20452628772 has 36 divisors (see below), whose sum is σ = 52471344016. Its totient is φ = 6715787760.

The previous prime is 20452628761. The next prime is 20452628783. The reversal of 20452628772 is 27782625402.

It is an interprime number because it is at equal distance from previous prime (20452628761) and next prime (20452628783).

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 4237354 + ... + 4242177.

Almost surely, 2^20452628772 is an apocalyptic number.

It is an amenable number.

20452628772 is an abundant number, since it is smaller than the sum of its proper divisors (32018715244).

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

20452628772 is a wasteful number, since it uses less digits than its factorization.

20452628772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8479608 (or 8479603 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The spelling of 20452628772 in words is "twenty billion, four hundred fifty-two million, six hundred twenty-eight thousand, seven hundred seventy-two".