28252394298 has 64 divisors (see below), whose sum is σ = 64842301440. Its totient is φ = 9108903600.

The previous prime is 28252394249. The next prime is 28252394311. The reversal of 28252394298 is 89249325282.

It is a happy number.

28252394298 is a `hidden beast` number, since 2 + 8 + 2 + 523 + 94 + 29 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4669111 + ... + 4675157.

It is an arithmetic number, because the mean of its divisors is an integer number (1013160960).

Almost surely, 2^28252394298 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28252394298, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32421150720).

28252394298 is an abundant number, since it is smaller than the sum of its proper divisors (36589907142).

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

28252394298 is a wasteful number, since it uses less digits than its factorization.

28252394298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8880 (or 8874 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The spelling of 28252394298 in words is "twenty-eight billion, two hundred fifty-two million, three hundred ninety-four thousand, two hundred ninety-eight".