2391012288 has 504 divisors, whose sum is σ = 8764828800. Its totient is φ = 608560128.

The previous prime is 2391012241. The next prime is 2391012319. The reversal of 2391012288 is 8822101932.

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

It is a super-2 number, since 2×2391012288² = 11433879522733989888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 40525603 + ... + 40525661.

Almost surely, 2^2391012288 is an apocalyptic number.

2391012288 is a gapful number since it is divisible by the number (28) 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 2391012288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4382414400).

2391012288 is an abundant number, since it is smaller than the sum of its proper divisors (6373816512).

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

2391012288 is a wasteful number, since it uses less digits than its factorization.

2391012288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 2391012288 is about 48897.9783631184. The cubic root of 2391012288 is about 1337.1925121662.

The spelling of 2391012288 in words is "two billion, three hundred ninety-one million, twelve thousand, two hundred eighty-eight".