26831740 has 48 divisors (see below), whose sum is σ = 62657280. Its totient is φ = 9584640.

The previous prime is 26831719. The next prime is 26831773. The reversal of 26831740 is 4713862.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6396 + ... + 9724.

It is an arithmetic number, because the mean of its divisors is an integer number (1305360).

Almost surely, 2^26831740 is an apocalyptic number.

26831740 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 26831740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31328640).

26831740 is an abundant number, since it is smaller than the sum of its proper divisors (35825540).

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

26831740 is a wasteful number, since it uses less digits than its factorization.

26831740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3382 (or 3380 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 26831740 is about 5179.9362930445. The cubic root of 26831740 is about 299.3755157817.

The spelling of 26831740 in words is "twenty-six million, eight hundred thirty-one thousand, seven hundred forty".