26811057 has 64 divisors (see below), whose sum is σ = 47900160. Its totient is φ = 12939264.

The previous prime is 26811049. The next prime is 26811061. The reversal of 26811057 is 75011862.

It is not a de Polignac number, because 26811057 - 2³ = 26811049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26811017) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 245919 + ... + 246027.

It is an arithmetic number, because the mean of its divisors is an integer number (748440).

Almost surely, 2^26811057 is an apocalyptic number.

It is an amenable number.

26811057 is a deficient number, since it is larger than the sum of its proper divisors (21089103).

26811057 is a wasteful number, since it uses less digits than its factorization.

26811057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 26811057 is about 5177.9394550342. The cubic root of 26811057 is about 299.2985723869.

It can be divided in two parts, 268 and 11057, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 26811057 in words is "twenty-six million, eight hundred eleven thousand, fifty-seven".