26478396 has 72 divisors (see below), whose sum is σ = 77051520. Its totient is φ = 7510176.

The previous prime is 26478391. The next prime is 26478407. The reversal of 26478396 is 69387462.

It is a super-2 number, since 2×26478396² = 1402210909465632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26478391) 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 23 ways as a sum of consecutive naturals, for example, 44815 + ... + 45401.

It is an arithmetic number, because the mean of its divisors is an integer number (1070160).

Almost surely, 2^26478396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26478396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38525760).

26478396 is an abundant number, since it is smaller than the sum of its proper divisors (50573124).

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

26478396 is a wasteful number, since it uses less digits than its factorization.

26478396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783 (or 778 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 26478396 is about 5145.7162766713. The cubic root of 26478396 is about 298.0555577089.

The spelling of 26478396 in words is "twenty-six million, four hundred seventy-eight thousand, three hundred ninety-six".