26199840 has 48 divisors (see below), whose sum is σ = 82531008. Its totient is φ = 6986496.

The previous prime is 26199827. The next prime is 26199851. The reversal of 26199840 is 4899162.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26812 + ... + 27771.

It is an arithmetic number, because the mean of its divisors is an integer number (1719396).

Almost surely, 2^26199840 is an apocalyptic number.

26199840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26199840 is an abundant number, since it is smaller than the sum of its proper divisors (56331168).

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

26199840 is a wasteful number, since it uses less digits than its factorization.

26199840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54601 (or 54593 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 26199840 is about 5118.5779275107. The cubic root of 26199840 is about 297.0066771731.

The spelling of 26199840 in words is "twenty-six million, one hundred ninety-nine thousand, eight hundred forty".