28340040036 has 288 divisors, whose sum is σ = 87333120000. Its totient is φ = 7066725120.

The previous prime is 28340039993. The next prime is 28340040101. The reversal of 28340040036 is 63004004382.

It is a junction number, because it is equal to n+sod(n) for n = 28340039985 and 28340040012.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 18905215 + ... + 18906713.

It is an arithmetic number, because the mean of its divisors is an integer number (303240000).

Almost surely, 2^28340040036 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 28340040036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43666560000).

28340040036 is an abundant number, since it is smaller than the sum of its proper divisors (58993079964).

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

28340040036 is a wasteful number, since it uses less digits than its factorization.

28340040036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647 (or 1638 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The spelling of 28340040036 in words is "twenty-eight billion, three hundred forty million, forty thousand, thirty-six".