72308 has 6 divisors (see below), whose sum is σ = 126546. Its totient is φ = 36152.

The previous prime is 72307. The next prime is 72313. The reversal of 72308 is 80327.

It can be written as a sum of positive squares in only one way, i.e., 71824 + 484 = 268^2 + 22^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9035 + ... + 9042.

It is an arithmetic number, because the mean of its divisors is an integer number (21091).

2⁷²³⁰⁸ is an apocalyptic number.

It is an amenable number.

72308 is a deficient number, since it is larger than the sum of its proper divisors (54238).

72308 is a wasteful number, since it uses less digits than its factorization.

72308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18081 (or 18079 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 72308 is about 268.9014689436. The cubic root of 72308 is about 41.6609129833.

The spelling of 72308 in words is "seventy-two thousand, three hundred eight".