20199622428 has 48 divisors (see below), whose sum is σ = 55449948960. Its totient is φ = 6337135872.

The previous prime is 20199622427. The next prime is 20199622439. The reversal of 20199622428 is 82422699102.

20199622428 is a `hidden beast` number, since 2 + 0 + 19 + 9 + 622 + 4 + 2 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20199622427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5499151 + ... + 5502822.

It is an arithmetic number, because the mean of its divisors is an integer number (1155207270).

Almost surely, 2^20199622428 is an apocalyptic number.

It is an amenable number.

20199622428 is an abundant number, since it is smaller than the sum of its proper divisors (35250326532).

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

20199622428 is a wasteful number, since it uses less digits than its factorization.

20199622428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11002003 (or 11001995 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 20199622428 in words is "twenty billion, one hundred ninety-nine million, six hundred twenty-two thousand, four hundred twenty-eight".