2815029940 has 12 divisors (see below), whose sum is σ = 5911562916. Its totient is φ = 1126011968.

The previous prime is 2815029901. The next prime is 2815029941. The reversal of 2815029940 is 499205182.

It can be written as a sum of positive squares in 2 ways, for example, as 1537110436 + 1277919504 = 39206^2 + 35748^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2815029893 and 2815029902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2815029941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70375729 + ... + 70375768.

It is an arithmetic number, because the mean of its divisors is an integer number (492630243).

Almost surely, 2^2815029940 is an apocalyptic number.

2815029940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2815029940 is an abundant number, since it is smaller than the sum of its proper divisors (3096532976).

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

2815029940 is a wasteful number, since it uses less digits than its factorization.

2815029940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140751506 (or 140751504 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 2815029940 is about 53056.8557304332. The cubic root of 2815029940 is about 1411.9771635327.

The spelling of 2815029940 in words is "two billion, eight hundred fifteen million, twenty-nine thousand, nine hundred forty".