20432228580 has 36 divisors (see below), whose sum is σ = 61977760572. Its totient is φ = 5448594240.

The previous prime is 20432228567. The next prime is 20432228611. The reversal of 20432228580 is 8582223402.

20432228580 is a `hidden beast` number, since 20 + 4 + 32 + 2 + 28 + 580 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12606349284 + 7825879296 = 112278^2 + 88464^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56756011 + ... + 56756370.

Almost surely, 2^20432228580 is an apocalyptic number.

20432228580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20432228580 is an abundant number, since it is smaller than the sum of its proper divisors (41545531992).

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

20432228580 is a wasteful number, since it uses less digits than its factorization.

20432228580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113512396 (or 113512391 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The spelling of 20432228580 in words is "twenty billion, four hundred thirty-two million, two hundred twenty-eight thousand, five hundred eighty".