28226463178 has 8 divisors (see below), whose sum is σ = 42448538340. Its totient is φ = 14076950400.

The previous prime is 28226463151. The next prime is 28226463203. The reversal of 28226463178 is 87136462282.

It can be written as a sum of positive squares in 2 ways, for example, as 26878618809 + 1347844369 = 163947^2 + 36713^2 .

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

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, 18139623 + ... + 18141178.

Almost surely, 2^28226463178 is an apocalyptic number.

28226463178 is a deficient number, since it is larger than the sum of its proper divisors (14222075162).

28226463178 is a wasteful number, since it uses less digits than its factorization.

28226463178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36281192.

The product of its digits is 1548288, while the sum is 49.

The spelling of 28226463178 in words is "twenty-eight billion, two hundred twenty-six million, four hundred sixty-three thousand, one hundred seventy-eight".