306723672 has 80 divisors (see below), whose sum is σ = 886881600. Its totient is φ = 98936640.

The previous prime is 306723671. The next prime is 306723701. The reversal of 306723672 is 276327603.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306723671) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12454 + ... + 27722.

It is an arithmetic number, because the mean of its divisors is an integer number (11086020).

Almost surely, 2^306723672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 306723672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (443440800).

306723672 is an abundant number, since it is smaller than the sum of its proper divisors (580157928).

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

306723672 is a wasteful number, since it uses less digits than its factorization.

306723672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15318 (or 15305 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 36.

The square root of 306723672 is about 17513.5282567506. The cubic root of 306723672 is about 674.3972100035.

The spelling of 306723672 in words is "three hundred six million, seven hundred twenty-three thousand, six hundred seventy-two".