26878401 has 12 divisors (see below), whose sum is σ = 42354000. Its totient is φ = 16289880.

The previous prime is 26878393. The next prime is 26878427. The reversal of 26878401 is 10487862.

It is not a de Polignac number, because 26878401 - 2³ = 26878393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26878451) 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, 135651 + ... + 135848.

It is an arithmetic number, because the mean of its divisors is an integer number (3529500).

Almost surely, 2^26878401 is an apocalyptic number.

It is an amenable number.

26878401 is a deficient number, since it is larger than the sum of its proper divisors (15475599).

26878401 is a wasteful number, since it uses less digits than its factorization.

26878401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271516 (or 271513 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 26878401 is about 5184.4383495225. The cubic root of 26878401 is about 299.5489555362.

The spelling of 26878401 in words is "twenty-six million, eight hundred seventy-eight thousand, four hundred one".