26390232 has 128 divisors (see below), whose sum is σ = 82944000. Its totient is φ = 7701120.

The previous prime is 26390201. The next prime is 26390257. The reversal of 26390232 is 23209362.

26390232 is a `hidden beast` number, since 2 + 639 + 0 + 23 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 26390196 and 26390205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68713 + ... + 69095.

It is an arithmetic number, because the mean of its divisors is an integer number (648000).

Almost surely, 2^26390232 is an apocalyptic number.

26390232 is a gapful number since it is divisible by the number (22) 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 26390232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41472000).

26390232 is an abundant number, since it is smaller than the sum of its proper divisors (56553768).

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

26390232 is a wasteful number, since it uses less digits than its factorization.

26390232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 26390232 is about 5137.1423963133. The cubic root of 26390232 is about 297.7243821903.

Adding to 26390232 its reverse (23209362), we get a palindrome (49599594).

The spelling of 26390232 in words is "twenty-six million, three hundred ninety thousand, two hundred thirty-two".