26198920 has 48 divisors (see below), whose sum is σ = 64805580. Its totient is φ = 9525120.

The previous prime is 26198917. The next prime is 26198933. The reversal of 26198920 is 2989162.

It can be written as a sum of positive squares in 2 ways, for example, as 24940036 + 1258884 = 4994^2 + 1122^2 .

It is a super-3 number, since 3×26198920³ (a number of 23 digits) contains 333 as substring.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 26198920.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2134 + ... + 7546.

Almost surely, 2^26198920 is an apocalyptic number.

26198920 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 26198920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32402790).

26198920 is an abundant number, since it is smaller than the sum of its proper divisors (38606660).

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

26198920 is a wasteful number, since it uses less digits than its factorization.

26198920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5446 (or 5431 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 26198920 is about 5118.4880580109. The cubic root of 26198920 is about 297.0032006971.

The spelling of 26198920 in words is "twenty-six million, one hundred ninety-eight thousand, nine hundred twenty".