28284578147 has 8 divisors (see below), whose sum is σ = 32332114176. Its totient is φ = 24238762632.

The previous prime is 28284578131. The next prime is 28284578167. The reversal of 28284578147 is 74187548282.

It is a happy number.

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

It is not a de Polignac number, because 28284578147 - 2⁴ = 28284578131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28284578092 and 28284578101.

It is not an unprimeable number, because it can be changed into a prime (28284578107) 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, 394703 + ... + 460824.

It is an arithmetic number, because the mean of its divisors is an integer number (4041514272).

Almost surely, 2^28284578147 is an apocalyptic number.

28284578147 is a deficient number, since it is larger than the sum of its proper divisors (4047536029).

28284578147 is an equidigital number, since it uses as much as digits as its factorization.

28284578147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860257.

The product of its digits is 8028160, while the sum is 56.

The spelling of 28284578147 in words is "twenty-eight billion, two hundred eighty-four million, five hundred seventy-eight thousand, one hundred forty-seven".