2391288 has 32 divisors (see below), whose sum is σ = 6330960. Its totient is φ = 750080.

The previous prime is 2391281. The next prime is 2391289. The reversal of 2391288 is 8821932.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2391281) 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, 2523 + ... + 3338.

2^2391288 is an apocalyptic number.

It is an amenable number.

2391288 is an abundant number, since it is smaller than the sum of its proper divisors (3939672).

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

2391288 is a wasteful number, since it uses less digits than its factorization.

2391288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5887 (or 5883 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 2391288 is about 1546.3789962360. The cubic root of 2391288 is about 133.7243908229.

The spelling of 2391288 in words is "two million, three hundred ninety-one thousand, two hundred eighty-eight".