20229628587 has 64 divisors (see below), whose sum is σ = 32986521600. Its totient is φ = 11002068000.

The previous prime is 20229628579. The next prime is 20229628619. The reversal of 20229628587 is 78582692202.

It is not a de Polignac number, because 20229628587 - 2³ = 20229628579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20229628547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4991712 + ... + 4995762.

It is an arithmetic number, because the mean of its divisors is an integer number (515414400).

Almost surely, 2^20229628587 is an apocalyptic number.

20229628587 is a deficient number, since it is larger than the sum of its proper divisors (12756893013).

20229628587 is a wasteful number, since it uses less digits than its factorization.

20229628587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4309 (or 4295 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 20229628587 in words is "twenty billion, two hundred twenty-nine million, six hundred twenty-eight thousand, five hundred eighty-seven".