28296186240 has 512 divisors, whose sum is σ = 112275072000. Its totient is φ = 5914460160.

The previous prime is 28296186227. The next prime is 28296186257. The reversal of 28296186240 is 4268169282.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 28296186240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7403530 + ... + 7407350.

It is an arithmetic number, because the mean of its divisors is an integer number (219287250).

Almost surely, 2^28296186240 is an apocalyptic number.

28296186240 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 28296186240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56137536000).

28296186240 is an abundant number, since it is smaller than the sum of its proper divisors (83978885760).

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

28296186240 is a wasteful number, since it uses less digits than its factorization.

28296186240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3898 (or 3886 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 48.

The spelling of 28296186240 in words is "twenty-eight billion, two hundred ninety-six million, one hundred eighty-six thousand, two hundred forty".