28429636554 has 192 divisors, whose sum is σ = 73936679040. Its totient is φ = 8063193600.

The previous prime is 28429636553. The next prime is 28429636579. The reversal of 28429636554 is 45563692482.

28429636554 is a `hidden beast` number, since 2 + 8 + 4 + 29 + 63 + 6 + 554 = 666.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28429636554.

It is not an unprimeable number, because it can be changed into a prime (28429636553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23436852 + ... + 23438064.

It is an arithmetic number, because the mean of its divisors is an integer number (385086870).

Almost surely, 2^28429636554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28429636554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36968339520).

28429636554 is an abundant number, since it is smaller than the sum of its proper divisors (45507042486).

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

28429636554 is a wasteful number, since it uses less digits than its factorization.

28429636554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474 (or 1457 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 54.

The spelling of 28429636554 in words is "twenty-eight billion, four hundred twenty-nine million, six hundred thirty-six thousand, five hundred fifty-four".