28417561706 has 4 divisors (see below), whose sum is σ = 42626342562. Its totient is φ = 14208780852.

The previous prime is 28417561699. The next prime is 28417561721. The reversal of 28417561706 is 60716571482.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 27892006081 + 525555625 = 167009^2 + 22925^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7104390425 + ... + 7104390428.

Almost surely, 2^28417561706 is an apocalyptic number.

28417561706 is a deficient number, since it is larger than the sum of its proper divisors (14208780856).

28417561706 is a wasteful number, since it uses less digits than its factorization.

28417561706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14208780855.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 28417561706 in words is "twenty-eight billion, four hundred seventeen million, five hundred sixty-one thousand, seven hundred six".