26497940 has 24 divisors (see below), whose sum is σ = 63595392. Its totient is φ = 9084960.

The previous prime is 26497921. The next prime is 26497949. The reversal of 26497940 is 4979462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26497949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94496 + ... + 94775.

It is an arithmetic number, because the mean of its divisors is an integer number (2649808).

Almost surely, 2^26497940 is an apocalyptic number.

26497940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26497940 is an abundant number, since it is smaller than the sum of its proper divisors (37097452).

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

26497940 is a wasteful number, since it uses less digits than its factorization.

26497940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189287 (or 189285 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 26497940 is about 5147.6149817173. The cubic root of 26497940 is about 298.1288723865.

The spelling of 26497940 in words is "twenty-six million, four hundred ninety-seven thousand, nine hundred forty".