2021947488 has 192 divisors, whose sum is σ = 6517324800. Its totient is φ = 604730880.

The previous prime is 2021947481. The next prime is 2021947489. The reversal of 2021947488 is 8847491202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021947481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 749470 + ... + 752162.

It is an arithmetic number, because the mean of its divisors is an integer number (33944400).

Almost surely, 2^2021947488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021947488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3258662400).

2021947488 is an abundant number, since it is smaller than the sum of its proper divisors (4495377312).

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

2021947488 is a wasteful number, since it uses less digits than its factorization.

2021947488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2802 (or 2788 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 2021947488 is about 44966.0704086982. The cubic root of 2021947488 is about 1264.5129774408.

The spelling of 2021947488 in words is "two billion, twenty-one million, nine hundred forty-seven thousand, four hundred eighty-eight".