2815903040 has 56 divisors (see below), whose sum is σ = 6780778920. Its totient is φ = 1113694208.

The previous prime is 2815903039. The next prime is 2815903043. The reversal of 2815903040 is 403095182.

It can be written as a sum of positive squares in 4 ways, for example, as 296666176 + 2519236864 = 17224^2 + 50192^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 2815902988 and 2815903006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2815903043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20957 + ... + 77916.

Almost surely, 2^2815903040 is an apocalyptic number.

2815903040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2815903040 is an abundant number, since it is smaller than the sum of its proper divisors (3964875880).

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

2815903040 is an equidigital number, since it uses as much as digits as its factorization.

2815903040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98979 (or 98969 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 2815903040 is about 53065.0830584481. The cubic root of 2815903040 is about 1412.1231264361.

The spelling of 2815903040 in words is "two billion, eight hundred fifteen million, nine hundred three thousand, forty".