26642550 has 96 divisors (see below), whose sum is σ = 73459584. Its totient is φ = 6336000.

The previous prime is 26642509. The next prime is 26642557. The reversal of 26642550 is 5524662.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a zygodrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26642557) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 110430 + ... + 110670.

It is an arithmetic number, because the mean of its divisors is an integer number (765204).

Almost surely, 2^26642550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26642550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36729792).

26642550 is an abundant number, since it is smaller than the sum of its proper divisors (46817034).

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

26642550 is a wasteful number, since it uses less digits than its factorization.

26642550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 26642550 is about 5161.6421805468. The cubic root of 26642550 is about 298.6702254860.

The spelling of 26642550 in words is "twenty-six million, six hundred forty-two thousand, five hundred fifty".