26428887 has 24 divisors (see below), whose sum is σ = 39726960. Its totient is φ = 16917120.

The previous prime is 26428879. The next prime is 26428891. The reversal of 26428887 is 78882462.

It is a happy number.

It is not a de Polignac number, because 26428887 - 2³ = 26428879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26428837) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24189 + ... + 25257.

It is an arithmetic number, because the mean of its divisors is an integer number (1655290).

Almost surely, 2^26428887 is an apocalyptic number.

26428887 is a deficient number, since it is larger than the sum of its proper divisors (13298073).

26428887 is a wasteful number, since it uses less digits than its factorization.

26428887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183 (or 1180 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The square root of 26428887 is about 5140.9033252922. The cubic root of 26428887 is about 297.8696748568.

The spelling of 26428887 in words is "twenty-six million, four hundred twenty-eight thousand, eight hundred eighty-seven".