28207702130 has 16 divisors (see below), whose sum is σ = 50867725464. Its totient is φ = 11262222720.

The previous prime is 28207702123. The next prime is 28207702147. The reversal of 28207702130 is 3120770282.

It can be written as a sum of positive squares in 4 ways, for example, as 14754717961 + 13452984169 = 121469^2 + 115987^2 .

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, 2601587 + ... + 2612406.

Almost surely, 2^28207702130 is an apocalyptic number.

28207702130 is a deficient number, since it is larger than the sum of its proper divisors (22660023334).

28207702130 is a wasteful number, since it uses less digits than its factorization.

28207702130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5214541.

The product of its (nonzero) digits is 9408, while the sum is 32.

The spelling of 28207702130 in words is "twenty-eight billion, two hundred seven million, seven hundred two thousand, one hundred thirty".