26428728 has 32 divisors (see below), whose sum is σ = 66819600. Its totient is φ = 8709888.

The previous prime is 26428673. The next prime is 26428729. The reversal of 26428728 is 82782462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26428729) 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, 4051 + ... + 8322.

Almost surely, 2^26428728 is an apocalyptic number.

It is an amenable number.

26428728 is an abundant number, since it is smaller than the sum of its proper divisors (40390872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26428728 is a wasteful number, since it uses less digits than its factorization.

26428728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12471 (or 12467 counting only the distinct ones).

The product of its digits is 86016, while the sum is 39.

The square root of 26428728 is about 5140.8878610606. The cubic root of 26428728 is about 297.8690775133.

The spelling of 26428728 in words is "twenty-six million, four hundred twenty-eight thousand, seven hundred twenty-eight".