26678580 has 48 divisors (see below), whose sum is σ = 75735744. Its totient is φ = 7015680.

The previous prime is 26678573. The next prime is 26678609. The reversal of 26678580 is 8587662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1335 + ... + 7425.

It is an arithmetic number, because the mean of its divisors is an integer number (1577828).

Almost surely, 2^26678580 is an apocalyptic number.

26678580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26678580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37867872).

26678580 is an abundant number, since it is smaller than the sum of its proper divisors (49057164).

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

26678580 is a wasteful number, since it uses less digits than its factorization.

26678580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6176 (or 6174 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 26678580 is about 5165.1311696800. The cubic root of 26678580 is about 298.8048002039.

The spelling of 26678580 in words is "twenty-six million, six hundred seventy-eight thousand, five hundred eighty".