28522204392528 has 640 divisors, whose sum is σ = 105242521190400. Its totient is φ = 7180792819200.

The previous prime is 28522204392499. The next prime is 28522204392589. The reversal of 28522204392528 is 82529340222582.

28522204392528 is a `hidden beast` number, since 2 + 8 + 5 + 2 + 2 + 20 + 4 + 3 + 92 + 528 = 666.

It is a super-2 number, since 2×28522204392528² (a number of 28 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 187300003 + ... + 187452221.

It is an arithmetic number, because the mean of its divisors is an integer number (164441439360).

Almost surely, 2^{28522204392528} is an apocalyptic number.

28522204392528 is a gapful number since it is divisible by the number (28) 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 28522204392528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52621260595200).

28522204392528 is an abundant number, since it is smaller than the sum of its proper divisors (76720316797872).

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

28522204392528 is a wasteful number, since it uses less digits than its factorization.

28522204392528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152428 (or 152416 counting only the distinct ones).

The product of its (nonzero) digits is 11059200, while the sum is 54.

The spelling of 28522204392528 in words is "twenty-eight trillion, five hundred twenty-two billion, two hundred four million, three hundred ninety-two thousand, five hundred twenty-eight".