628431852326 has 4 divisors (see below), whose sum is σ = 942647778492. Its totient is φ = 314215926162.

The previous prime is 628431852311. The next prime is 628431852341. The reversal of 628431852326 is 623258134826.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 623258134826 = 2 ⋅311629067413.

It is an interprime number because it is at equal distance from previous prime (628431852311) and next prime (628431852341).

It is a super-2 number, since 2×628431852326² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157107963080 + ... + 157107963083.

It is an arithmetic number, because the mean of its divisors is an integer number (235661944623).

Almost surely, 2^628431852326 is an apocalyptic number.

628431852326 is a deficient number, since it is larger than the sum of its proper divisors (314215926166).

628431852326 is a wasteful number, since it uses less digits than its factorization.

628431852326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314215926165.

The product of its digits is 3317760, while the sum is 50.

The spelling of 628431852326 in words is "six hundred twenty-eight billion, four hundred thirty-one million, eight hundred fifty-two thousand, three hundred twenty-six".