26447920 has 40 divisors (see below), whose sum is σ = 65111904. Its totient is φ = 9956352.

The previous prime is 26447879. The next prime is 26447951. The reversal of 26447920 is 2974462.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (34).

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, 8364 + ... + 11083.

Almost surely, 2^26447920 is an apocalyptic number.

26447920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26447920 is an abundant number, since it is smaller than the sum of its proper divisors (38663984).

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

26447920 is a wasteful number, since it uses less digits than its factorization.

26447920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19477 (or 19471 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 26447920 is about 5142.7541259524. The cubic root of 26447920 is about 297.9411622047.

It can be divided in two parts, 264 and 47920, that added together give a palindrome (48184).

The spelling of 26447920 in words is "twenty-six million, four hundred forty-seven thousand, nine hundred twenty".