26660880 has 80 divisors (see below), whose sum is σ = 91839360. Its totient is φ = 7108992.

The previous prime is 26660863. The next prime is 26660897. The reversal of 26660880 is 8806662.

It is an interprime number because it is at equal distance from previous prime (26660863) and next prime (26660897).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4012 + ... + 8331.

It is an arithmetic number, because the mean of its divisors is an integer number (1147992).

Almost surely, 2^26660880 is an apocalyptic number.

26660880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26660880 is an abundant number, since it is smaller than the sum of its proper divisors (65178480).

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

26660880 is a wasteful number, since it uses less digits than its factorization.

26660880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12365 (or 12353 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 26660880 is about 5163.4174729534. The cubic root of 26660880 is about 298.7387045443.

The spelling of 26660880 in words is "twenty-six million, six hundred sixty thousand, eight hundred eighty".