8726138408 has 16 divisors (see below), whose sum is σ = 17620087380. Its totient is φ = 4027448448.

The previous prime is 8726138381. The next prime is 8726138419. The reversal of 8726138408 is 8048316278.

It can be written as a sum of positive squares in 2 ways, for example, as 7502677924 + 1223460484 = 86618^2 + 34978^2 .

It is a super-2 number, since 2×8726138408² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41952485 + ... + 41952692.

Almost surely, 2^8726138408 is an apocalyptic number.

It is an amenable number.

8726138408 is an abundant number, since it is smaller than the sum of its proper divisors (8893948972).

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

8726138408 is a wasteful number, since it uses less digits than its factorization.

8726138408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83905196 (or 83905192 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The square root of 8726138408 is about 93413.8020209005. The cubic root of 8726138408 is about 2058.7677935853.

The spelling of 8726138408 in words is "eight billion, seven hundred twenty-six million, one hundred thirty-eight thousand, four hundred eight".