26636540 has 24 divisors (see below), whose sum is σ = 63928032. Its totient is φ = 9132480.

The previous prime is 26636531. The next prime is 26636549. The reversal of 26636540 is 4563662.

It is an interprime number because it is at equal distance from previous prime (26636531) and next prime (26636549).

It is a junction number, because it is equal to n+sod(n) for n = 26636497 and 26636506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26636549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94991 + ... + 95270.

It is an arithmetic number, because the mean of its divisors is an integer number (2663668).

Almost surely, 2^26636540 is an apocalyptic number.

26636540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26636540 is an abundant number, since it is smaller than the sum of its proper divisors (37291492).

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

26636540 is a wasteful number, since it uses less digits than its factorization.

26636540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190277 (or 190275 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 26636540 is about 5161.0599686499. The cubic root of 26636540 is about 298.6477658860.

The spelling of 26636540 in words is "twenty-six million, six hundred thirty-six thousand, five hundred forty".