2021902272 has 168 divisors, whose sum is σ = 6457127040. Its totient is φ = 600606720.

The previous prime is 2021902261. The next prime is 2021902291. The reversal of 2021902272 is 2722091202.

2021902272 is a `hidden beast` number, since 202 + 190 + 2 + 272 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 212497 + ... + 221807.

It is an arithmetic number, because the mean of its divisors is an integer number (38435280).

Almost surely, 2^2021902272 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 2021902272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3228563520).

2021902272 is an abundant number, since it is smaller than the sum of its proper divisors (4435224768).

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

2021902272 is a wasteful number, since it uses less digits than its factorization.

2021902272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9371 (or 9358 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 2021902272 is about 44965.5676267964. The cubic root of 2021902272 is about 1264.5035514385.

Adding to 2021902272 its reverse (2722091202), we get a palindrome (4743993474).

The spelling of 2021902272 in words is "two billion, twenty-one million, nine hundred two thousand, two hundred seventy-two".