20028228492 has 48 divisors (see below), whose sum is σ = 47309068800. Its totient is φ = 6594033600.

The previous prime is 20028228469. The next prime is 20028228527. The reversal of 20028228492 is 29482282002.

It is a super-2 number, since 2×20028228492² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20028228492.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488109 + ... + 527547.

It is an arithmetic number, because the mean of its divisors is an integer number (985605600).

Almost surely, 2^20028228492 is an apocalyptic number.

It is an amenable number.

20028228492 is an abundant number, since it is smaller than the sum of its proper divisors (27280840308).

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

20028228492 is a wasteful number, since it uses less digits than its factorization.

20028228492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39966 (or 39964 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The spelling of 20028228492 in words is "twenty billion, twenty-eight million, two hundred twenty-eight thousand, four hundred ninety-two".