27826390004 has 48 divisors (see below), whose sum is σ = 57529221120. Its totient is φ = 11524589280.

The previous prime is 27826389977. The next prime is 27826390037. The reversal of 27826390004 is 40009362872.

It is a happy number.

It is a super-2 number, since 2×27826390004² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 601799 + ... + 646385.

It is an arithmetic number, because the mean of its divisors is an integer number (1198525440).

Almost surely, 2^27826390004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27826390004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28764610560).

27826390004 is an abundant number, since it is smaller than the sum of its proper divisors (29702831116).

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

27826390004 is a wasteful number, since it uses less digits than its factorization.

27826390004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45348 (or 45346 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 27826390004 in words is "twenty-seven billion, eight hundred twenty-six million, three hundred ninety thousand, four".