628247187839 has 16 divisors (see below), whose sum is σ = 641926995840. Its totient is φ = 614670298080.

The previous prime is 628247187823. The next prime is 628247187881. The reversal of 628247187839 is 938781742826.

It is a cyclic number.

It is not a de Polignac number, because 628247187839 - 2⁴ = 628247187823 is a prime.

It is a super-2 number, since 2×628247187839² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628247187739) 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, 52641917 + ... + 52653849.

It is an arithmetic number, because the mean of its divisors is an integer number (40120437240).

Almost surely, 2^628247187839 is an apocalyptic number.

628247187839 is a deficient number, since it is larger than the sum of its proper divisors (13679808001).

628247187839 is a wasteful number, since it uses less digits than its factorization.

628247187839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16150.

The product of its digits is 65028096, while the sum is 65.

The spelling of 628247187839 in words is "six hundred twenty-eight billion, two hundred forty-seven million, one hundred eighty-seven thousand, eight hundred thirty-nine".