28299890227 has 8 divisors (see below), whose sum is σ = 32346374400. Its totient is φ = 24254316744.

The previous prime is 28299890209. The next prime is 28299890249. The reversal of 28299890227 is 72209899282.

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

It is not a de Polignac number, because 28299890227 - 2¹¹ = 28299888179 is a prime.

It is a super-2 number, since 2×28299890227² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28299890627) 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, 159727 + ... + 286552.

It is an arithmetic number, because the mean of its divisors is an integer number (4043296800).

Almost surely, 2^28299890227 is an apocalyptic number.

28299890227 is a deficient number, since it is larger than the sum of its proper divisors (4046484173).

28299890227 is an equidigital number, since it uses as much as digits as its factorization.

28299890227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455345.

The product of its (nonzero) digits is 5225472, while the sum is 58.

The spelling of 28299890227 in words is "twenty-eight billion, two hundred ninety-nine million, eight hundred ninety thousand, two hundred twenty-seven".