26647880 has 64 divisors (see below), whose sum is σ = 72144000. Its totient is φ = 8653824.

The previous prime is 26647877. The next prime is 26647883. The reversal of 26647880 is 8874662.

It is an interprime number because it is at equal distance from previous prime (26647877) and next prime (26647883).

It is not an unprimeable number, because it can be changed into a prime (26647883) 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, 2816 + ... + 7824.

It is an arithmetic number, because the mean of its divisors is an integer number (1127250).

Almost surely, 2^26647880 is an apocalyptic number.

26647880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26647880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36072000).

26647880 is an abundant number, since it is smaller than the sum of its proper divisors (45496120).

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

26647880 is a wasteful number, since it uses less digits than its factorization.

26647880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5046 (or 5042 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 26647880 is about 5162.1584632787. The cubic root of 26647880 is about 298.6901410741.

The spelling of 26647880 in words is "twenty-six million, six hundred forty-seven thousand, eight hundred eighty".