26421340 has 24 divisors (see below), whose sum is σ = 60529392. Its totient is φ = 9607680.

The previous prime is 26421337. The next prime is 26421359. The reversal of 26421340 is 4312462.

It is a happy number.

It is a super-3 number, since 3×26421340³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59829 + ... + 60268.

It is an arithmetic number, because the mean of its divisors is an integer number (2522058).

Almost surely, 2^26421340 is an apocalyptic number.

26421340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26421340 is an abundant number, since it is smaller than the sum of its proper divisors (34108052).

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

26421340 is a wasteful number, since it uses less digits than its factorization.

26421340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120117 (or 120115 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 26421340 is about 5140.1692579136. The cubic root of 26421340 is about 297.8413190599.

The spelling of 26421340 in words is "twenty-six million, four hundred twenty-one thousand, three hundred forty".