20492424920 has 192 divisors, whose sum is σ = 56216397600. Its totient is φ = 6643445760.

The previous prime is 20492424919. The next prime is 20492424929. The reversal of 20492424920 is 2942429402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20492424929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2696486 + ... + 2704074.

Almost surely, 2^20492424920 is an apocalyptic number.

20492424920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20492424920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28108198800).

20492424920 is an abundant number, since it is smaller than the sum of its proper divisors (35723972680).

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

20492424920 is a wasteful number, since it uses less digits than its factorization.

20492424920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7666 (or 7643 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 20492424920 in words is "twenty billion, four hundred ninety-two million, four hundred twenty-four thousand, nine hundred twenty".