26472780 has 72 divisors (see below), whose sum is σ = 81651024. Its totient is φ = 6940800.

The previous prime is 26472739. The next prime is 26472781. The reversal of 26472780 is 8727462.

26472780 is a `hidden beast` number, since 2 + 647 + 2 + 7 + 8 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (26472781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9775 + ... + 12185.

It is an arithmetic number, because the mean of its divisors is an integer number (1134042).

Almost surely, 2^26472780 is an apocalyptic number.

26472780 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 26472780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40825512).

26472780 is an abundant number, since it is smaller than the sum of its proper divisors (55178244).

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

26472780 is a wasteful number, since it uses less digits than its factorization.

26472780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487 (or 2482 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 26472780 is about 5145.1705511091. The cubic root of 26472780 is about 298.0344839454.

The spelling of 26472780 in words is "twenty-six million, four hundred seventy-two thousand, seven hundred eighty".