2791235920 has 40 divisors (see below), whose sum is σ = 7079591520. Its totient is φ = 1014994560.

The previous prime is 2791235917. The next prime is 2791235969. The reversal of 2791235920 is 295321972.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×2791235920² = 15581995922196492800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 1585050 + ... + 1586809.

It is an arithmetic number, because the mean of its divisors is an integer number (176989788).

Almost surely, 2^2791235920 is an apocalyptic number.

2791235920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2791235920 is an abundant number, since it is smaller than the sum of its proper divisors (4288355600).

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

2791235920 is a wasteful number, since it uses less digits than its factorization.

2791235920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171883 (or 3171877 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 2791235920 is about 52832.1485461267. The cubic root of 2791235920 is about 1407.9876596930.

The spelling of 2791235920 in words is "two billion, seven hundred ninety-one million, two hundred thirty-five thousand, nine hundred twenty".