306722 has 16 divisors (see below), whose sum is σ = 508032. Its totient is φ = 138000.

The previous prime is 306707. The next prime is 306727. The reversal of 306722 is 227603.

It is a junction number, because it is equal to n+sod(n) for n = 306694 and 306703.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 306722.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1097 + ... + 1347.

It is an arithmetic number, because the mean of its divisors is an integer number (31752).

2³⁰⁶⁷²² is an apocalyptic number.

306722 is a deficient number, since it is larger than the sum of its proper divisors (201310).

306722 is a wasteful number, since it uses less digits than its factorization.

306722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 306722 is about 553.8248820701. The cubic root of 306722 is about 67.4395984585.

The spelling of 306722 in words is "three hundred six thousand, seven hundred twenty-two".