26621250 has 80 divisors (see below), whose sum is σ = 68977920. Its totient is φ = 6840000.

The previous prime is 26621249. The next prime is 26621263. The reversal of 26621250 is 5212662.

It is a self number, because there is not a number n which added to its sum of digits gives 26621250.

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 116136 + ... + 116364.

It is an arithmetic number, because the mean of its divisors is an integer number (862224).

Almost surely, 2^26621250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26621250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34488960).

26621250 is an abundant number, since it is smaller than the sum of its proper divisors (42356670).

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

26621250 is a wasteful number, since it uses less digits than its factorization.

26621250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 270 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 26621250 is about 5159.5784711544. The cubic root of 26621250 is about 298.5906113363.

The spelling of 26621250 in words is "twenty-six million, six hundred twenty-one thousand, two hundred fifty".