26316640 has 48 divisors (see below), whose sum is σ = 71057952. Its totient is φ = 9022464.

The previous prime is 26316637. The next prime is 26316643. The reversal of 26316640 is 4661362.

It is an interprime number because it is at equal distance from previous prime (26316637) and next prime (26316643).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 26316599 and 26316608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26316643) by changing a digit.

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, 10629 + ... + 12868.

It is an arithmetic number, because the mean of its divisors is an integer number (1480374).

Almost surely, 2^26316640 is an apocalyptic number.

26316640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26316640 is an abundant number, since it is smaller than the sum of its proper divisors (44741312).

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

26316640 is a wasteful number, since it uses less digits than its factorization.

26316640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23519 (or 23511 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 26316640 is about 5129.9746588068. The cubic root of 26316640 is about 297.4473790602.

The spelling of 26316640 in words is "twenty-six million, three hundred sixteen thousand, six hundred forty".