306724 has 12 divisors (see below), whose sum is σ = 585648. Its totient is φ = 139400.

The previous prime is 306707. The next prime is 306727. The reversal of 306724 is 427603.

306724 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×306724² = 188159224352, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 306695 and 306704.

It is not an unprimeable number, because it can be changed into a prime (306727) by changing a digit.

306724 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3442 + ... + 3529.

It is an arithmetic number, because the mean of its divisors is an integer number (48804).

2³⁰⁶⁷²⁴ is an apocalyptic number.

It is an amenable number.

306724 is a deficient number, since it is larger than the sum of its proper divisors (278924).

306724 is a wasteful number, since it uses less digits than its factorization.

306724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6986 (or 6984 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 306724 is about 553.8266876921. The cubic root of 306724 is about 67.4397450396.

The spelling of 306724 in words is "three hundred six thousand, seven hundred twenty-four".