28242820227 has 8 divisors (see below), whose sum is σ = 38871838720. Its totient is φ = 18221174280.

The previous prime is 28242820189. The next prime is 28242820231. The reversal of 28242820227 is 72202824282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28242820227 - 2⁶ = 28242820163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28242820247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151843027 + ... + 151843212.

It is an arithmetic number, because the mean of its divisors is an integer number (4858979840).

Almost surely, 2^28242820227 is an apocalyptic number.

28242820227 is a deficient number, since it is larger than the sum of its proper divisors (10629018493).

28242820227 is a wasteful number, since it uses less digits than its factorization.

28242820227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303686273.

The product of its (nonzero) digits is 114688, while the sum is 39.

The spelling of 28242820227 in words is "twenty-eight billion, two hundred forty-two million, eight hundred twenty thousand, two hundred twenty-seven".