11812858 has 8 divisors (see below), whose sum is σ = 18761652. Its totient is φ = 5558976.

The previous prime is 11812849. The next prime is 11812873. The reversal of 11812858 is 85821811.

It can be written as a sum of positive squares in 2 ways, for example, as 11607649 + 205209 = 3407^2 + 453^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×11812858² = 279087228256328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 347437 = 11812858 / (1 + 1 + 8 + 1 + 2 + 8 + 5 + 8).

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, 173685 + ... + 173752.

Almost surely, 2^11812858 is an apocalyptic number.

11812858 is a deficient number, since it is larger than the sum of its proper divisors (6948794).

11812858 is a wasteful number, since it uses less digits than its factorization.

11812858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347456.

The product of its digits is 5120, while the sum is 34.

The square root of 11812858 is about 3436.9838521587. The cubic root of 11812858 is about 227.7464736057.

The spelling of 11812858 in words is "eleven million, eight hundred twelve thousand, eight hundred fifty-eight".