2391588 has 36 divisors (see below), whose sum is σ = 6243328. Its totient is φ = 771120.

The previous prime is 2391583. The next prime is 2391589. The reversal of 2391588 is 8851932.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (2391583) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45 + ... + 2187.

2^2391588 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 2391588, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3121664).

2391588 is an abundant number, since it is smaller than the sum of its proper divisors (3851740).

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

2391588 is a wasteful number, since it uses less digits than its factorization.

2391588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2184 (or 2179 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 2391588 is about 1546.4759939941. The cubic root of 2391588 is about 133.7299827382.

The spelling of 2391588 in words is "two million, three hundred ninety-one thousand, five hundred eighty-eight".