26668380 has 24 divisors (see below), whose sum is σ = 74671632. Its totient is φ = 7111552.

The previous prime is 26668373. The next prime is 26668387. The reversal of 26668380 is 8386662.

It is an interprime number because it is at equal distance from previous prime (26668373) and next prime (26668387).

It is a super-2 number, since 2×26668380² = 1422404983648800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26668387) 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, 222177 + ... + 222296.

It is an arithmetic number, because the mean of its divisors is an integer number (3111318).

Almost surely, 2^26668380 is an apocalyptic number.

26668380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26668380 is an abundant number, since it is smaller than the sum of its proper divisors (48003252).

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

26668380 is a wasteful number, since it uses less digits than its factorization.

26668380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444485 (or 444483 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 26668380 is about 5164.1436850653. The cubic root of 26668380 is about 298.7667147502.

The spelling of 26668380 in words is "twenty-six million, six hundred sixty-eight thousand, three hundred eighty".