26666940 has 24 divisors (see below), whose sum is σ = 74667600. Its totient is φ = 7111168.

The previous prime is 26666917. The next prime is 26666947. The reversal of 26666940 is 4966662.

It is a super-2 number, since 2×26666940² = 1422251377927200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26666947) 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, 222165 + ... + 222284.

It is an arithmetic number, because the mean of its divisors is an integer number (3111150).

Almost surely, 2^26666940 is an apocalyptic number.

26666940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26666940 is an abundant number, since it is smaller than the sum of its proper divisors (48000660).

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

26666940 is a wasteful number, since it uses less digits than its factorization.

26666940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444461 (or 444459 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 26666940 is about 5164.0042602616. The cubic root of 26666940 is about 298.7613371981.

The spelling of 26666940 in words is "twenty-six million, six hundred sixty-six thousand, nine hundred forty".