2787405280 has 48 divisors (see below), whose sum is σ = 7183908144. Its totient is φ = 1013601280.

The previous prime is 2787405233. The next prime is 2787405281. The reversal of 2787405280 is 825047872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2787405281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 790117 + ... + 793636.

It is an arithmetic number, because the mean of its divisors is an integer number (149664753).

Almost surely, 2^2787405280 is an apocalyptic number.

2787405280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2787405280 is an abundant number, since it is smaller than the sum of its proper divisors (4396502864).

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

2787405280 is a wasteful number, since it uses less digits than its factorization.

2787405280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583779 (or 1583771 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 43.

The square root of 2787405280 is about 52795.8831728384. The cubic root of 2787405280 is about 1407.3432661703.

The spelling of 2787405280 in words is "two billion, seven hundred eighty-seven million, four hundred five thousand, two hundred eighty".