2291478336 has 504 divisors, whose sum is σ = 8263347456. Its totient is φ = 627056640.

The previous prime is 2291478311. The next prime is 2291478349. The reversal of 2291478336 is 6338741922.

It is a tau number, because it is divible by the number of its divisors (504).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 2291478291 and 2291478300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 23623440 + ... + 23623536.

Almost surely, 2^2291478336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2291478336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4131673728).

2291478336 is an abundant number, since it is smaller than the sum of its proper divisors (5971869120).

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

2291478336 is an equidigital number, since it uses as much as digits as its factorization.

2291478336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 140 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 2291478336 is about 47869.3882977420. The cubic root of 2291478336 is about 1318.3738653230.

The spelling of 2291478336 in words is "two billion, two hundred ninety-one million, four hundred seventy-eight thousand, three hundred thirty-six".