26157857 has 8 divisors (see below), whose sum is σ = 28683072. Its totient is φ = 23657200.

The previous prime is 26157841. The next prime is 26157863. The reversal of 26157857 is 75875162.

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 26157857 - 2⁴ = 26157841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26157457) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 3869 + ... + 8202.

It is an arithmetic number, because the mean of its divisors is an integer number (3585384).

Almost surely, 2^26157857 is an apocalyptic number.

It is an amenable number.

26157857 is a deficient number, since it is larger than the sum of its proper divisors (2525215).

26157857 is a wasteful number, since it uses less digits than its factorization.

26157857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12279.

The product of its digits is 117600, while the sum is 41.

The square root of 26157857 is about 5114.4752418992. The cubic root of 26157857 is about 296.8479497717.

The spelling of 26157857 in words is "twenty-six million, one hundred fifty-seven thousand, eight hundred fifty-seven".