2785261280 has 24 divisors (see below), whose sum is σ = 6580180152. Its totient is φ = 1114104448.

The previous prime is 2785261279. The next prime is 2785261373. The reversal of 2785261280 is 821625872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8703782 + ... + 8704101.

It is an arithmetic number, because the mean of its divisors is an integer number (274174173).

Almost surely, 2^2785261280 is an apocalyptic number.

2785261280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2785261280 is an abundant number, since it is smaller than the sum of its proper divisors (3794918872).

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

2785261280 is a wasteful number, since it uses less digits than its factorization.

2785261280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17407898 (or 17407890 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 2785261280 is about 52775.5746534322. The cubic root of 2785261280 is about 1406.9823429446.

The spelling of 2785261280 in words is "two billion, seven hundred eighty-five million, two hundred sixty-one thousand, two hundred eighty".