26144420 has 12 divisors (see below), whose sum is σ = 54903324. Its totient is φ = 10457760.

The previous prime is 26144383. The next prime is 26144441. The reversal of 26144420 is 2444162.

It can be written as a sum of positive squares in 2 ways, for example, as 15241216 + 10903204 = 3904^2 + 3302^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653591 + ... + 653630.

It is an arithmetic number, because the mean of its divisors is an integer number (4575277).

Almost surely, 2^26144420 is an apocalyptic number.

26144420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26144420 is an abundant number, since it is smaller than the sum of its proper divisors (28758904).

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

26144420 is a wasteful number, since it uses less digits than its factorization.

26144420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307230 (or 1307228 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 26144420 is about 5113.1614486539. The cubic root of 26144420 is about 296.7971119032.

Adding to 26144420 its reverse (2444162), we get a palindrome (28588582).

The spelling of 26144420 in words is "twenty-six million, one hundred forty-four thousand, four hundred twenty".