26678428 has 24 divisors (see below), whose sum is σ = 53467232. Its totient is φ = 11409984.

The previous prime is 26678419. The next prime is 26678453. The reversal of 26678428 is 82487662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23326 + ... + 24442.

Almost surely, 2^26678428 is an apocalyptic number.

26678428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

26678428 is an abundant number, since it is smaller than the sum of its proper divisors (26788804).

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

26678428 is a wasteful number, since it uses less digits than its factorization.

26678428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1981 (or 1979 counting only the distinct ones).

The product of its digits is 258048, while the sum is 43.

The square root of 26678428 is about 5165.1164556087. The cubic root of 26678428 is about 298.8042327272.

The spelling of 26678428 in words is "twenty-six million, six hundred seventy-eight thousand, four hundred twenty-eight".