2780862972 has 48 divisors (see below), whose sum is σ = 6541516800. Its totient is φ = 919435840.

The previous prime is 2780862947. The next prime is 2780863013. The reversal of 2780862972 is 2792680872.

2780862972 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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, 890029 + ... + 893147.

It is an arithmetic number, because the mean of its divisors is an integer number (136281600).

Almost surely, 2^2780862972 is an apocalyptic number.

It is an amenable number.

2780862972 is an abundant number, since it is smaller than the sum of its proper divisors (3760653828).

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

2780862972 is a wasteful number, since it uses less digits than its factorization.

2780862972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3706 (or 3704 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 51.

The square root of 2780862972 is about 52733.8882693093. Note that the first 3 decimals coincide. The cubic root of 2780862972 is about 1406.2413469966.

The spelling of 2780862972 in words is "two billion, seven hundred eighty million, eight hundred sixty-two thousand, nine hundred seventy-two".