26320140 has 240 divisors, whose sum is σ = 103428864. Its totient is φ = 5443200.

The previous prime is 26320117. The next prime is 26320153. The reversal of 26320140 is 4102362.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 79 ways as a sum of consecutive naturals, for example, 124635 + ... + 124845.

Almost surely, 2^26320140 is an apocalyptic number.

26320140 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 26320140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51714432).

26320140 is an abundant number, since it is smaller than the sum of its proper divisors (77108724).

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

26320140 is a wasteful number, since it uses less digits than its factorization.

26320140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 26320140 is about 5130.3157797547. The cubic root of 26320140 is about 297.4605648833.

The spelling of 26320140 in words is "twenty-six million, three hundred twenty thousand, one hundred forty".