28376308290 has 128 divisors (see below), whose sum is σ = 78550041600. Its totient is φ = 6488259840.

The previous prime is 28376308283. The next prime is 28376308291. The reversal of 28376308290 is 9280367382.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28376308291) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1425949 + ... + 1445711.

It is an arithmetic number, because the mean of its divisors is an integer number (613672200).

Almost surely, 2^28376308290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28376308290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39275020800).

28376308290 is an abundant number, since it is smaller than the sum of its proper divisors (50173733310).

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

28376308290 is a wasteful number, since it uses less digits than its factorization.

28376308290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20032.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 28376308290 in words is "twenty-eight billion, three hundred seventy-six million, three hundred eight thousand, two hundred ninety".