11878858 has 4 divisors (see below), whose sum is σ = 17818290. Its totient is φ = 5939428.

The previous prime is 11878847. The next prime is 11878861. The reversal of 11878858 is 85887811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85887811 = 1493 ⋅57527.

It can be written as a sum of positive squares in only one way, i.e., 9199089 + 2679769 = 3033^2 + 1637^2 .

It is a super-2 number, since 2×11878858² = 282214534768328, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2969713 + ... + 2969716.

Almost surely, 2^11878858 is an apocalyptic number.

11878858 is a deficient number, since it is larger than the sum of its proper divisors (5939432).

11878858 is an equidigital number, since it uses as much as digits as its factorization.

11878858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5939431.

The product of its digits is 143360, while the sum is 46.

The square root of 11878858 is about 3446.5719200388. The cubic root of 11878858 is about 228.1698360112.

The spelling of 11878858 in words is "eleven million, eight hundred seventy-eight thousand, eight hundred fifty-eight".