26851240 has 32 divisors (see below), whose sum is σ = 65063880. Its totient is φ = 9914112.

The previous prime is 26851219. The next prime is 26851243. The reversal of 26851240 is 4215862.

It can be written as a sum of positive squares in 4 ways, for example, as 14333796 + 12517444 = 3786^2 + 3538^2 .

It is a junction number, because it is equal to n+sod(n) for n = 26851199 and 26851208.

It is not an unprimeable number, because it can be changed into a prime (26851243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25299 + ... + 26338.

Almost surely, 2^26851240 is an apocalyptic number.

26851240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26851240 is an abundant number, since it is smaller than the sum of its proper divisors (38212640).

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

26851240 is a wasteful number, since it uses less digits than its factorization.

26851240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51661 (or 51657 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 26851240 is about 5181.8182137161. The cubic root of 26851240 is about 299.4480220611.

The spelling of 26851240 in words is "twenty-six million, eight hundred fifty-one thousand, two hundred forty".