11897582 has 4 divisors (see below), whose sum is σ = 17846376. Its totient is φ = 5948790.

The previous prime is 11897579. The next prime is 11897597. The reversal of 11897582 is 28579811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28579811 = 13 ⋅2198447.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2974394 + ... + 2974397.

It is an arithmetic number, because the mean of its divisors is an integer number (4461594).

Almost surely, 2^11897582 is an apocalyptic number.

11897582 is a deficient number, since it is larger than the sum of its proper divisors (5948794).

11897582 is an equidigital number, since it uses as much as digits as its factorization.

11897582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5948793.

The product of its digits is 40320, while the sum is 41.

The square root of 11897582 is about 3449.2871727358. The cubic root of 11897582 is about 228.2896569925.

The spelling of 11897582 in words is "eleven million, eight hundred ninety-seven thousand, five hundred eighty-two".