26431328 has 96 divisors (see below), whose sum is σ = 68802048. Its totient is φ = 9676800.

The previous prime is 26431303. The next prime is 26431331. The reversal of 26431328 is 82313462.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 26431328.

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, 41573 + ... + 42203.

It is an arithmetic number, because the mean of its divisors is an integer number (716688).

Almost surely, 2^26431328 is an apocalyptic number.

26431328 is a gapful number since it is divisible by the number (28) 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 26431328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34401024).

26431328 is an abundant number, since it is smaller than the sum of its proper divisors (42370720).

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

26431328 is a wasteful number, since it uses less digits than its factorization.

26431328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676 (or 668 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 26431328 is about 5141.1407294491. The cubic root of 26431328 is about 297.8788450940.

The spelling of 26431328 in words is "twenty-six million, four hundred thirty-one thousand, three hundred twenty-eight".