26686740 has 48 divisors (see below), whose sum is σ = 75075840. Its totient is φ = 7082880.

The previous prime is 26686727. The next prime is 26686747. The reversal of 26686740 is 4768662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26686747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13410 + ... + 15270.

It is an arithmetic number, because the mean of its divisors is an integer number (1564080).

Almost surely, 2^26686740 is an apocalyptic number.

26686740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26686740 is an abundant number, since it is smaller than the sum of its proper divisors (48389100).

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

26686740 is a wasteful number, since it uses less digits than its factorization.

26686740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112 (or 2110 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 26686740 is about 5165.9210214636. The cubic root of 26686740 is about 298.8352615780.

The spelling of 26686740 in words is "twenty-six million, six hundred eighty-six thousand, seven hundred forty".