2820252391 has 12 divisors (see below), whose sum is σ = 3130652952. Its totient is φ = 2538470000.

The previous prime is 2820252371. The next prime is 2820252397. The reversal of 2820252391 is 1932520282.

It is a de Polignac number, because none of the positive numbers 2^k-2820252391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2820252397) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103165 + ... + 127606.

It is an arithmetic number, because the mean of its divisors is an integer number (260887746).

Almost surely, 2^2820252391 is an apocalyptic number.

2820252391 is a deficient number, since it is larger than the sum of its proper divisors (310400561).

2820252391 is a wasteful number, since it uses less digits than its factorization.

2820252391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230894 (or 230883 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 2820252391 is about 53106.0485349833. The cubic root of 2820252391 is about 1412.8497920451.

The spelling of 2820252391 in words is "two billion, eight hundred twenty million, two hundred fifty-two thousand, three hundred ninety-one".