11538857 has 8 divisors (see below), whose sum is σ = 12928512. Its totient is φ = 10206000.

The previous prime is 11538853. The next prime is 11538887. The reversal of 11538857 is 75883511.

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

It is a cyclic number.

It is not a de Polignac number, because 11538857 - 2² = 11538853 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11538857.

It is not an unprimeable number, because it can be changed into a prime (11538853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13769 + ... + 14582.

It is an arithmetic number, because the mean of its divisors is an integer number (1616064).

Almost surely, 2^11538857 is an apocalyptic number.

It is an amenable number.

11538857 is a deficient number, since it is larger than the sum of its proper divisors (1389655).

11538857 is a wasteful number, since it uses less digits than its factorization.

11538857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28399.

The product of its digits is 33600, while the sum is 38.

The square root of 11538857 is about 3396.8893122974. The cubic root of 11538857 is about 225.9718097294.

It can be divided in two parts, 115 and 38857, that multiplied together give a triangular number (4468555 = T₂₉₈₉).

The spelling of 11538857 in words is "eleven million, five hundred thirty-eight thousand, eight hundred fifty-seven".