2781846460 has 48 divisors (see below), whose sum is σ = 6145826400. Its totient is φ = 1056145664.

The previous prime is 2781846427. The next prime is 2781846461. The reversal of 2781846460 is 646481872.

It is a self number, because there is not a number n which added to its sum of digits gives 2781846460.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2781846461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6427 + ... + 74866.

It is an arithmetic number, because the mean of its divisors is an integer number (128038050).

Almost surely, 2^2781846460 is an apocalyptic number.

2781846460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2781846460 is an abundant number, since it is smaller than the sum of its proper divisors (3363979940).

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

2781846460 is a wasteful number, since it uses less digits than its factorization.

2781846460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81390 (or 81388 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 46.

The square root of 2781846460 is about 52743.2124543054. The cubic root of 2781846460 is about 1406.4071059109.

The spelling of 2781846460 in words is "two billion, seven hundred eighty-one million, eight hundred forty-six thousand, four hundred sixty".