28807152427 has 4 divisors (see below), whose sum is σ = 28823587240. Its totient is φ = 28790717616.

The previous prime is 28807152403. The next prime is 28807152463. The reversal of 28807152427 is 72425170882.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72425170882 = 2 ⋅36212585441.

It is a cyclic number.

It is not a de Polignac number, because 28807152427 - 2³¹ = 26659668779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28807152467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8214777 + ... + 8218282.

It is an arithmetic number, because the mean of its divisors is an integer number (7205896810).

Almost surely, 2^28807152427 is an apocalyptic number.

28807152427 is a deficient number, since it is larger than the sum of its proper divisors (16434813).

28807152427 is a wasteful number, since it uses less digits than its factorization.

28807152427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16434812.

The product of its (nonzero) digits is 501760, while the sum is 46.

The spelling of 28807152427 in words is "twenty-eight billion, eight hundred seven million, one hundred fifty-two thousand, four hundred twenty-seven".