80635380 has 72 divisors (see below), whose sum is σ = 262650528. Its totient is φ = 18430272.

The previous prime is 80635367. The next prime is 80635381. The reversal of 80635380 is 8353608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80635381) 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, 10774 + ... + 16653.

It is an arithmetic number, because the mean of its divisors is an integer number (3647924).

Almost surely, 2^80635380 is an apocalyptic number.

It is an amenable number.

80635380 is an abundant number, since it is smaller than the sum of its proper divisors (182015148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80635380 is a wasteful number, since it uses less digits than its factorization.

80635380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27453 (or 27444 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 80635380 is about 8979.7204856276. The cubic root of 80635380 is about 432.0246685159.

Adding to 80635380 its reverse (8353608), we get a palindrome (88988988).

The spelling of 80635380 in words is "eighty million, six hundred thirty-five thousand, three hundred eighty".