26228947808 has 48 divisors (see below), whose sum is σ = 59093473824. Its totient is φ = 11226055680.

The previous prime is 26228947807. The next prime is 26228947817. The reversal of 26228947808 is 80874982262.

It is a happy number.

It is a super-2 number, since 2×26228947808² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26228947807) 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, 92228 + ... + 246908.

It is an arithmetic number, because the mean of its divisors is an integer number (1231114038).

Almost surely, 2^26228947808 is an apocalyptic number.

26228947808 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

26228947808 is an abundant number, since it is smaller than the sum of its proper divisors (32864526016).

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

26228947808 is a wasteful number, since it uses less digits than its factorization.

26228947808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155455 (or 155447 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 56.

The spelling of 26228947808 in words is "twenty-six billion, two hundred twenty-eight million, nine hundred forty-seven thousand, eight hundred eight".