20046290240 has 56 divisors (see below), whose sum is σ = 47812817760. Its totient is φ = 8005483008.

The previous prime is 20046290179. The next prime is 20046290267. The reversal of 20046290240 is 4209264002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147479 + ... + 248681.

Almost surely, 2^20046290240 is an apocalyptic number.

20046290240 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 20046290240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23906408880).

20046290240 is an abundant number, since it is smaller than the sum of its proper divisors (27766527520).

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

20046290240 is a wasteful number, since it uses less digits than its factorization.

20046290240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101839 (or 101829 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 20046290240 in words is "twenty billion, forty-six million, two hundred ninety thousand, two hundred forty".