2804306640 has 80 divisors (see below), whose sum is σ = 8835910656. Its totient is φ = 735552000.

The previous prime is 2804306633. The next prime is 2804306657. The reversal of 2804306640 is 466034082.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×2804306640² = 15728271462296179200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81136 + ... + 110415.

Almost surely, 2^2804306640 is an apocalyptic number.

2804306640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2804306640 is an abundant number, since it is smaller than the sum of its proper divisors (6031604016).

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

2804306640 is a wasteful number, since it uses less digits than its factorization.

2804306640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191628 (or 191622 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 2804306640 is about 52955.7045085796. The cubic root of 2804306640 is about 1410.1819995440.

The spelling of 2804306640 in words is "two billion, eight hundred four million, three hundred six thousand, six hundred forty".