80400306 has 32 divisors (see below), whose sum is σ = 184238208. Its totient is φ = 22913280.

The previous prime is 80400301. The next prime is 80400319. The reversal of 80400306 is 60300408.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (80400301) 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, 15976 + ... + 20396.

It is an arithmetic number, because the mean of its divisors is an integer number (5757444).

Almost surely, 2^80400306 is an apocalyptic number.

80400306 is an abundant number, since it is smaller than the sum of its proper divisors (103837902).

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

80400306 is a wasteful number, since it uses less digits than its factorization.

80400306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4866.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 80400306 is about 8966.6217718827. The cubic root of 80400306 is about 431.6044368651.

The spelling of 80400306 in words is "eighty million, four hundred thousand, three hundred six".