26220420 has 144 divisors (see below), whose sum is σ = 84983808. Its totient is φ = 6531840.

The previous prime is 26220419. The next prime is 26220421. The reversal of 26220420 is 2402262.

It is a happy number.

26220420 is a `hidden beast` number, since 2 + 622 + 0 + 42 + 0 = 666.

26220420 is nontrivially palindromic in base 13.

It is an interprime number because it is at equal distance from previous prime (26220419) and next prime (26220421).

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 = 26220393 and 26220402.

It is not an unprimeable number, because it can be changed into a prime (26220421) 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, 206397 + ... + 206523.

Almost surely, 2^26220420 is an apocalyptic number.

26220420 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 26220420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42491904).

26220420 is an abundant number, since it is smaller than the sum of its proper divisors (58763388).

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

26220420 is a wasteful number, since it uses less digits than its factorization.

26220420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 205 counting only the distinct ones).

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

The square root of 26220420 is about 5120.5878568774. The cubic root of 26220420 is about 297.0844231654.

Adding to 26220420 its reverse (2402262), we get a palindrome (28622682).

The spelling of 26220420 in words is "twenty-six million, two hundred twenty thousand, four hundred twenty".