2391388 has 12 divisors (see below), whose sum is σ = 4256280. Its totient is φ = 1175312.

The previous prime is 2391349. The next prime is 2391401. The reversal of 2391388 is 8831932.

2391388 = T₇ + T₈ + ... + T₂₄₂.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4831 + ... + 5302.

It is an arithmetic number, because the mean of its divisors is an integer number (354690).

2^2391388 is an apocalyptic number.

It is an amenable number.

2391388 is a deficient number, since it is larger than the sum of its proper divisors (1864892).

2391388 is a wasteful number, since it uses less digits than its factorization.

2391388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10196 (or 10194 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 2391388 is about 1546.4113294981. The cubic root of 2391388 is about 133.7262548466.

The spelling of 2391388 in words is "two million, three hundred ninety-one thousand, three hundred eighty-eight".