2891486280 has 32 divisors (see below), whose sum is σ = 8674459200. Its totient is φ = 771062976.

The previous prime is 2891486233. The next prime is 2891486287. The reversal of 2891486280 is 826841982.

It is not an unprimeable number, because it can be changed into a prime (2891486287) 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, 12047740 + ... + 12047979.

It is an arithmetic number, because the mean of its divisors is an integer number (271076850).

Almost surely, 2^2891486280 is an apocalyptic number.

2891486280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2891486280 is an abundant number, since it is smaller than the sum of its proper divisors (5782972920).

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

2891486280 is a wasteful number, since it uses less digits than its factorization.

2891486280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24095733 (or 24095729 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 48.

The square root of 2891486280 is about 53772.5420637708. The cubic root of 2891486280 is about 1424.6462698487.

The spelling of 2891486280 in words is "two billion, eight hundred ninety-one million, four hundred eighty-six thousand, two hundred eighty".