28071915226 has 8 divisors (see below), whose sum is σ = 42109077780. Its totient is φ = 14035555968.

The previous prime is 28071915217. The next prime is 28071915239. The reversal of 28071915226 is 62251917082.

It can be written as a sum of positive squares in 2 ways, for example, as 24759337201 + 3312578025 = 157351^2 + 57555^2 .

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, 104151 + ... + 258826.

Almost surely, 2^28071915226 is an apocalyptic number.

28071915226 is a deficient number, since it is larger than the sum of its proper divisors (14037162554).

28071915226 is a wasteful number, since it uses less digits than its factorization.

28071915226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401648.

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 28071915226 in words is "twenty-eight billion, seventy-one million, nine hundred fifteen thousand, two hundred twenty-six".