28362288021 has 16 divisors (see below), whose sum is σ = 38172524544. Its totient is φ = 18730879344.

The previous prime is 28362287971. The next prime is 28362288029. The reversal of 28362288021 is 12088226382.

It is not a de Polignac number, because 28362288021 - 2³³ = 19772353429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28362288029) 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, 55660 + ... + 244586.

It is an arithmetic number, because the mean of its divisors is an integer number (2385782784).

Almost surely, 2^28362288021 is an apocalyptic number.

It is an amenable number.

28362288021 is a deficient number, since it is larger than the sum of its proper divisors (9810236523).

28362288021 is a wasteful number, since it uses less digits than its factorization.

28362288021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189400.

The product of its (nonzero) digits is 147456, while the sum is 42.

The spelling of 28362288021 in words is "twenty-eight billion, three hundred sixty-two million, two hundred eighty-eight thousand, twenty-one".