2981580 has 96 divisors (see below), whose sum is σ = 9891840. Its totient is φ = 656640.

The previous prime is 2981569. The next prime is 2981581. The reversal of 2981580 is 851892.

2981580 = 295² + 296² + ... + 325².

It is a happy number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2981581) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12906 + ... + 13134.

It is an arithmetic number, because the mean of its divisors is an integer number (103040).

2^2981580 is an apocalyptic number.

2981580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2981580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4945920).

2981580 is an abundant number, since it is smaller than the sum of its proper divisors (6910260).

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

2981580 is a wasteful number, since it uses less digits than its factorization.

2981580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 2981580 is about 1726.7252242323. The cubic root of 2981580 is about 143.9291704135.

The spelling of 2981580 in words is "two million, nine hundred eighty-one thousand, five hundred eighty".