28007006345770 has 16 divisors (see below), whose sum is σ = 51239047676328. Its totient is φ = 11019150037440.

The previous prime is 28007006345737. The next prime is 28007006345797. The reversal of 28007006345770 is 7754360070082.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18792667172601 + 9214339173169 = 4335051^2 + 3035513^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22956561969 + ... + 22956563188.

Almost surely, 2^{28007006345770} is an apocalyptic number.

28007006345770 is a deficient number, since it is larger than the sum of its proper divisors (23232041330558).

28007006345770 is a wasteful number, since it uses less digits than its factorization.

28007006345770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45913125225.

The product of its (nonzero) digits is 1975680, while the sum is 49.

The spelling of 28007006345770 in words is "twenty-eight trillion, seven billion, six million, three hundred forty-five thousand, seven hundred seventy".