2491412220 has 144 divisors (see below), whose sum is σ = 8729386848. Its totient is φ = 568442880.

The previous prime is 2491412207. The next prime is 2491412249. The reversal of 2491412220 is 222141942.

2491412220 is a `hidden beast` number, since 24 + 9 + 1 + 412 + 220 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3349 + ... + 70668.

It is an arithmetic number, because the mean of its divisors is an integer number (60620742).

Almost surely, 2^2491412220 is an apocalyptic number.

2491412220 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 2491412220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4364693424).

2491412220 is an abundant number, since it is smaller than the sum of its proper divisors (6237974628).

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

2491412220 is a wasteful number, since it uses less digits than its factorization.

2491412220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74060 (or 74055 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 2491412220 is about 49914.0483230924. The cubic root of 2491412220 is about 1355.6529706884.

The spelling of 2491412220 in words is "two billion, four hundred ninety-one million, four hundred twelve thousand, two hundred twenty".