26391420 has 120 divisors (see below), whose sum is σ = 90378288. Its totient is φ = 6393600.

The previous prime is 26391383. The next prime is 26391433. The reversal of 26391420 is 2419362.

26391420 is a `hidden beast` number, since 2 + 639 + 1 + 4 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 17080 + ... + 18560.

Almost surely, 2^26391420 is an apocalyptic number.

26391420 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 26391420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45189144).

26391420 is an abundant number, since it is smaller than the sum of its proper divisors (63986868).

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

26391420 is a wasteful number, since it uses less digits than its factorization.

26391420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513 (or 1502 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 26391420 is about 5137.2580234985. The cubic root of 26391420 is about 297.7288496419.

The spelling of 26391420 in words is "twenty-six million, three hundred ninety-one thousand, four hundred twenty".