20492259940 has 48 divisors (see below), whose sum is σ = 43621748352. Its totient is φ = 8085528576.

The previous prime is 20492259919. The next prime is 20492259947. The reversal of 20492259940 is 4995229402.

It is not an unprimeable number, because it can be changed into a prime (20492259947) 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, 510067 + ... + 548773.

It is an arithmetic number, because the mean of its divisors is an integer number (908786424).

Almost surely, 2^20492259940 is an apocalyptic number.

20492259940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20492259940 is an abundant number, since it is smaller than the sum of its proper divisors (23129488412).

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

20492259940 is a wasteful number, since it uses less digits than its factorization.

20492259940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39076 (or 39074 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 20492259940 in words is "twenty billion, four hundred ninety-two million, two hundred fifty-nine thousand, nine hundred forty".