26478138 has 16 divisors (see below), whose sum is σ = 53854560. Its totient is φ = 8676336.

The previous prime is 26478121. The next prime is 26478149. The reversal of 26478138 is 83187462.

It is a junction number, because it is equal to n+sod(n) for n = 26478096 and 26478105.

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, 37045 + ... + 37752.

It is an arithmetic number, because the mean of its divisors is an integer number (3365910).

Almost surely, 2^26478138 is an apocalyptic number.

26478138 is an abundant number, since it is smaller than the sum of its proper divisors (27376422).

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

26478138 is a wasteful number, since it uses less digits than its factorization.

26478138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74861.

The product of its digits is 64512, while the sum is 39.

The square root of 26478138 is about 5145.6912072141. The cubic root of 26478138 is about 298.0545896420.

The spelling of 26478138 in words is "twenty-six million, four hundred seventy-eight thousand, one hundred thirty-eight".