80304140 has 36 divisors (see below), whose sum is σ = 196173936. Its totient is φ = 27532512.

The previous prime is 80304137. The next prime is 80304163. The reversal of 80304140 is 4140308.

It is a super-2 number, since 2×80304140² = 12897509802279200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39992 + ... + 41951.

It is an arithmetic number, because the mean of its divisors is an integer number (5449276).

Almost surely, 2^80304140 is an apocalyptic number.

It is an amenable number.

80304140 is an abundant number, since it is smaller than the sum of its proper divisors (115869796).

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

80304140 is a wasteful number, since it uses less digits than its factorization.

80304140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81966 (or 81957 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 80304140 is about 8961.2577242260. The cubic root of 80304140 is about 431.4322889653.

Adding to 80304140 its reverse (4140308), we get a palindrome (84444448).

The spelling of 80304140 in words is "eighty million, three hundred four thousand, one hundred forty".