26042220 has 72 divisors (see below), whose sum is σ = 79606800. Its totient is φ = 6890880.

The previous prime is 26042213. The next prime is 26042221. The reversal of 26042220 is 2224062.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 26042193 and 26042202.

It is not an unprimeable number, because it can be changed into a prime (26042221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26335 + ... + 27305.

It is an arithmetic number, because the mean of its divisors is an integer number (1105650).

Almost surely, 2^26042220 is an apocalyptic number.

26042220 is a gapful number since it is divisible by the number (20) 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 26042220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39803400).

26042220 is an abundant number, since it is smaller than the sum of its proper divisors (53564580).

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

26042220 is a wasteful number, since it uses less digits than its factorization.

26042220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135 (or 1130 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 26042220 is about 5103.1578458833. The cubic root of 26042220 is about 296.4098747168.

Adding to 26042220 its reverse (2224062), we get a palindrome (28266282).

It can be divided in two parts, 26042 and 220, that added together give a palindrome (26262).

The spelling of 26042220 in words is "twenty-six million, forty-two thousand, two hundred twenty".