28201457622 has 32 divisors (see below), whose sum is σ = 61887678048. Its totient is φ = 8513646336.

The previous prime is 28201457591. The next prime is 28201457623. The reversal of 28201457622 is 22675410282.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28201457623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3406783 + ... + 3415050.

It is an arithmetic number, because the mean of its divisors is an integer number (1933989939).

Almost surely, 2^28201457622 is an apocalyptic number.

28201457622 is an abundant number, since it is smaller than the sum of its proper divisors (33686220426).

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

28201457622 is a wasteful number, since it uses less digits than its factorization.

28201457622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6821904.

The product of its (nonzero) digits is 107520, while the sum is 39.

The spelling of 28201457622 in words is "twenty-eight billion, two hundred one million, four hundred fifty-seven thousand, six hundred twenty-two".