28497123522450 has 192 divisors, whose sum is σ = 85704754544640. Its totient is φ = 6905113416000.

The previous prime is 28497123522331. The next prime is 28497123522467. The reversal of 28497123522450 is 5422532179482.

It is a happy number.

28497123522450 is a `hidden beast` number, since 2 + 8 + 4 + 9 + 71 + 2 + 3 + 522 + 45 + 0 = 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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 30893827 + ... + 31802873.

It is an arithmetic number, because the mean of its divisors is an integer number (446378929920).

Almost surely, 2^{28497123522450} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28497123522450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42852377272320).

28497123522450 is an abundant number, since it is smaller than the sum of its proper divisors (57207631022190).

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

28497123522450 is a wasteful number, since it uses less digits than its factorization.

28497123522450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911190 (or 911179 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 54.

The spelling of 28497123522450 in words is "twenty-eight trillion, four hundred ninety-seven billion, one hundred twenty-three million, five hundred twenty-two thousand, four hundred fifty".