2021717268 has 36 divisors (see below), whose sum is σ = 5379424960. Its totient is φ = 638436816.

The previous prime is 2021717233. The next prime is 2021717279. The reversal of 2021717268 is 8627171202.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1477180 + ... + 1478547.

Almost surely, 2^2021717268 is an apocalyptic number.

It is an amenable number.

2021717268 is an abundant number, since it is smaller than the sum of its proper divisors (3357707692).

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

2021717268 is a wasteful number, since it uses less digits than its factorization.

2021717268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2955756 (or 2955751 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 2021717268 is about 44963.5104056612. The cubic root of 2021717268 is about 1264.4649829159.

The spelling of 2021717268 in words is "two billion, twenty-one million, seven hundred seventeen thousand, two hundred sixty-eight".