26839240 has 32 divisors (see below), whose sum is σ = 60538680. Its totient is φ = 10708992.

The previous prime is 26839237. The next prime is 26839247. The reversal of 26839240 is 4293862.

It can be written as a sum of positive squares in 4 ways, for example, as 23677956 + 3161284 = 4866^2 + 1778^2 .

It is a junction number, because it is equal to n+sod(n) for n = 26839196 and 26839205.

It is not an unprimeable number, because it can be changed into a prime (26839247) 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, 26422 + ... + 27418.

Almost surely, 2^26839240 is an apocalyptic number.

26839240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26839240 is an abundant number, since it is smaller than the sum of its proper divisors (33699440).

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

26839240 is a wasteful number, since it uses less digits than its factorization.

26839240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681 (or 1677 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 26839240 is about 5180.6601895897. The cubic root of 26839240 is about 299.4034069682.

The spelling of 26839240 in words is "twenty-six million, eight hundred thirty-nine thousand, two hundred forty".