26693680 has 40 divisors (see below), whose sum is σ = 66839472. Its totient is φ = 9855744.

The previous prime is 26693663. The next prime is 26693683. The reversal of 26693680 is 8639662.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (26693683) 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, 11794 + ... + 13873.

Almost surely, 2^26693680 is an apocalyptic number.

26693680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26693680 is an abundant number, since it is smaller than the sum of its proper divisors (40145792).

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

26693680 is a wasteful number, since it uses less digits than its factorization.

26693680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25693 (or 25687 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 26693680 is about 5166.5926876424. The cubic root of 26693680 is about 298.8611637922.

The spelling of 26693680 in words is "twenty-six million, six hundred ninety-three thousand, six hundred eighty".