26492778 has 48 divisors (see below), whose sum is σ = 63771840. Its totient is φ = 8148816.

The previous prime is 26492771. The next prime is 26492813. The reversal of 26492778 is 87729462.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26492771) 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, 7675 + ... + 10577.

It is an arithmetic number, because the mean of its divisors is an integer number (1328580).

Almost surely, 2^26492778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26492778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31885920).

26492778 is an abundant number, since it is smaller than the sum of its proper divisors (37279062).

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

26492778 is a wasteful number, since it uses less digits than its factorization.

26492778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2940 (or 2921 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 26492778 is about 5147.1135600451. The cubic root of 26492778 is about 298.1095118729.

It can be divided in two parts, 26 and 492778, that added together give a square (492804 = 702²).

The spelling of 26492778 in words is "twenty-six million, four hundred ninety-two thousand, seven hundred seventy-eight".