26283780 has 36 divisors (see below), whose sum is σ = 79728012. Its totient is φ = 7008960.

The previous prime is 26283769. The next prime is 26283781. The reversal of 26283780 is 8738262.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3873024 + 22410756 = 1968^2 + 4734^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26283781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72831 + ... + 73190.

It is an arithmetic number, because the mean of its divisors is an integer number (2214667).

Almost surely, 2^26283780 is an apocalyptic number.

26283780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26283780 is an abundant number, since it is smaller than the sum of its proper divisors (53444232).

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

26283780 is a wasteful number, since it uses less digits than its factorization.

26283780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146036 (or 146031 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 26283780 is about 5126.7709135478. The cubic root of 26283780 is about 297.3235259668.

The spelling of 26283780 in words is "twenty-six million, two hundred eighty-three thousand, seven hundred eighty".