28933569146 has 8 divisors (see below), whose sum is σ = 43847780340. Its totient is φ = 14317642368.

The previous prime is 28933569097. The next prime is 28933569211. The reversal of 28933569146 is 64196533982.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27833917225 + 1099651921 = 166835^2 + 33161^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 28933569091 and 28933569100.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74570861 + ... + 74571248.

Almost surely, 2^28933569146 is an apocalyptic number.

28933569146 is a deficient number, since it is larger than the sum of its proper divisors (14914211194).

28933569146 is a wasteful number, since it uses less digits than its factorization.

28933569146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149142208.

The product of its digits is 8398080, while the sum is 56.

The spelling of 28933569146 in words is "twenty-eight billion, nine hundred thirty-three million, five hundred sixty-nine thousand, one hundred forty-six".