28252670709 has 16 divisors (see below), whose sum is σ = 38170685952. Its totient is φ = 18585439728.

The previous prime is 28252670707. The next prime is 28252670717. The reversal of 28252670709 is 90707625282.

It is not a de Polignac number, because 28252670709 - 2¹ = 28252670707 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28252670707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135994 + ... + 273860.

It is an arithmetic number, because the mean of its divisors is an integer number (2385667872).

Almost surely, 2^28252670709 is an apocalyptic number.

It is an amenable number.

28252670709 is a deficient number, since it is larger than the sum of its proper divisors (9918015243).

28252670709 is a wasteful number, since it uses less digits than its factorization.

28252670709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138776.

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 28252670709 in words is "twenty-eight billion, two hundred fifty-two million, six hundred seventy thousand, seven hundred nine".