26947440 has 120 divisors (see below), whose sum is σ = 97493760. Its totient is φ = 6630912.

The previous prime is 26947429. The next prime is 26947441. The reversal of 26947440 is 4474962.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is a junction number, because it is equal to n+sod(n) for n = 26947395 and 26947404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26947441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7921 + ... + 10799.

It is an arithmetic number, because the mean of its divisors is an integer number (812448).

Almost surely, 2^26947440 is an apocalyptic number.

26947440 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 26947440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48746880).

26947440 is an abundant number, since it is smaller than the sum of its proper divisors (70546320).

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

26947440 is a wasteful number, since it uses less digits than its factorization.

26947440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2911 (or 2902 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 26947440 is about 5191.0923705902. The cubic root of 26947440 is about 299.8052068795.

The spelling of 26947440 in words is "twenty-six million, nine hundred forty-seven thousand, four hundred forty".