28601474805 has 24 divisors (see below), whose sum is σ = 50086988952. Its totient is φ = 15096858624.

The previous prime is 28601474777. The next prime is 28601474831. The reversal of 28601474805 is 50847410682.

28601474805 is a `hidden beast` number, since 28 + 6 + 0 + 147 + 480 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 10052669169 + 18548805636 = 100263^2 + 136194^2 .

It is not a de Polignac number, because 28601474805 - 2⁵ = 28601474773 is a prime.

It is a super-2 number, since 2×28601474805² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3271864 + ... + 3280593.

It is an arithmetic number, because the mean of its divisors is an integer number (2086957873).

Almost surely, 2^28601474805 is an apocalyptic number.

It is an amenable number.

28601474805 is a deficient number, since it is larger than the sum of its proper divisors (21485514147).

28601474805 is a wasteful number, since it uses less digits than its factorization.

28601474805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6552565 (or 6552562 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 28601474805 in words is "twenty-eight billion, six hundred one million, four hundred seventy-four thousand, eight hundred five".