2807145840 has 40 divisors (see below), whose sum is σ = 8702152848. Its totient is φ = 748572160.

The previous prime is 2807145839. The next prime is 2807145851. The reversal of 2807145840 is 485417082.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (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, 5847981 + ... + 5848460.

Almost surely, 2^2807145840 is an apocalyptic number.

2807145840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2807145840 is an abundant number, since it is smaller than the sum of its proper divisors (5895007008).

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

2807145840 is a wasteful number, since it uses less digits than its factorization.

2807145840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11696457 (or 11696451 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 39.

The square root of 2807145840 is about 52982.5050370403. The cubic root of 2807145840 is about 1410.6577485501.

The spelling of 2807145840 in words is "two billion, eight hundred seven million, one hundred forty-five thousand, eight hundred forty".