80628399 has 24 divisors (see below), whose sum is σ = 126901520. Its totient is φ = 50585472.

The previous prime is 80628391. The next prime is 80628407. The reversal of 80628399 is 99382608.

It is an interprime number because it is at equal distance from previous prime (80628391) and next prime (80628407).

It is not a de Polignac number, because 80628399 - 2³ = 80628391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80628391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2637 + ... + 12969.

Almost surely, 2^80628399 is an apocalyptic number.

80628399 is a deficient number, since it is larger than the sum of its proper divisors (46273121).

80628399 is a wasteful number, since it uses less digits than its factorization.

80628399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10376 (or 10353 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 80628399 is about 8979.3317680104. The cubic root of 80628399 is about 432.0122006585.

It can be divided in two parts, 8062 and 8399, that added together give a palindrome (16461).

The spelling of 80628399 in words is "eighty million, six hundred twenty-eight thousand, three hundred ninety-nine".