28373600639 has 4 divisors (see below), whose sum is σ = 28654527480. Its totient is φ = 28092673800.

The previous prime is 28373600623. The next prime is 28373600663. The reversal of 28373600639 is 93600637382.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28373600639 - 2⁴ = 28373600623 is a prime.

It is a super-4 number, since 4×28373600639⁴ (a number of 43 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28373600593 and 28373600602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28373600669) 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, 140463269 + ... + 140463470.

It is an arithmetic number, because the mean of its divisors is an integer number (7163631870).

Almost surely, 2^28373600639 is an apocalyptic number.

28373600639 is a deficient number, since it is larger than the sum of its proper divisors (280926841).

28373600639 is a wasteful number, since it uses less digits than its factorization.

28373600639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280926840.

The product of its (nonzero) digits is 979776, while the sum is 47.

The spelling of 28373600639 in words is "twenty-eight billion, three hundred seventy-three million, six hundred thousand, six hundred thirty-nine".