26228708740 has 240 divisors, whose sum is σ = 65776605552. Its totient is φ = 8746942464.

The previous prime is 26228708729. The next prime is 26228708767. The reversal of 26228708740 is 4780782262.

It can be written as a sum of positive squares in 40 ways, for example, as 21410127684 + 4818581056 = 146322^2 + 69416^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 359297344 + ... + 359297416.

Almost surely, 2^26228708740 is an apocalyptic number.

26228708740 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 26228708740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32888302776).

26228708740 is an abundant number, since it is smaller than the sum of its proper divisors (39547896812).

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

26228708740 is a wasteful number, since it uses less digits than its factorization.

26228708740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 46.

The spelling of 26228708740 in words is "twenty-six billion, two hundred twenty-eight million, seven hundred eight thousand, seven hundred forty".