20257883492 has 48 divisors (see below), whose sum is σ = 44536504320. Its totient is φ = 7832416800.

The previous prime is 20257883483. The next prime is 20257883507. The reversal of 20257883492 is 29438875202.

It is a happy number.

It is a super-2 number, since 2×20257883492² (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 20257883492.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 210692 + ... + 291387.

It is an arithmetic number, because the mean of its divisors is an integer number (927843840).

Almost surely, 2^20257883492 is an apocalyptic number.

20257883492 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20257883492 is an abundant number, since it is smaller than the sum of its proper divisors (24278620828).

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

20257883492 is a wasteful number, since it uses less digits than its factorization.

20257883492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502232 (or 502230 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 20257883492 in words is "twenty billion, two hundred fifty-seven million, eight hundred eighty-three thousand, four hundred ninety-two".