2391240288 has 48 divisors (see below), whose sum is σ = 6607379520. Its totient is φ = 755127936.

The previous prime is 2391240227. The next prime is 2391240289. The reversal of 2391240288 is 8820421932.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×2391240288² = 11436060229908645888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2391240289) 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, 653670 + ... + 657317.

It is an arithmetic number, because the mean of its divisors is an integer number (137653740).

Almost surely, 2^2391240288 is an apocalyptic number.

It is an amenable number.

2391240288 is an abundant number, since it is smaller than the sum of its proper divisors (4216139232).

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

2391240288 is a wasteful number, since it uses less digits than its factorization.

2391240288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311019 (or 1311011 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 2391240288 is about 48900.3096922709. The cubic root of 2391240288 is about 1337.2350144157.

The spelling of 2391240288 in words is "two billion, three hundred ninety-one million, two hundred forty thousand, two hundred eighty-eight".