26881057 has 12 divisors (see below), whose sum is σ = 32349780. Its totient is φ = 22245216.

The previous prime is 26881033. The next prime is 26881079. The reversal of 26881057 is 75018862.

It can be written as a sum of positive squares in 2 ways, for example, as 18113536 + 8767521 = 4256^2 + 2961^2 .

It is not a de Polignac number, because 26881057 - 2⁷ = 26880929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26881007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8038 + ... + 10879.

It is an arithmetic number, because the mean of its divisors is an integer number (2695815).

Almost surely, 2^26881057 is an apocalyptic number.

It is an amenable number.

26881057 is a deficient number, since it is larger than the sum of its proper divisors (5468723).

26881057 is a wasteful number, since it uses less digits than its factorization.

26881057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18960 (or 18953 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 26881057 is about 5184.6944943748. The cubic root of 26881057 is about 299.5588218947.

The spelling of 26881057 in words is "twenty-six million, eight hundred eighty-one thousand, fifty-seven".