72399301 has 8 divisors (see below), whose sum is σ = 78038744. Its totient is φ = 66769920.

The previous prime is 72399293. The next prime is 72399319. The reversal of 72399301 is 10399327.

It can be written as a sum of positive squares in 4 ways, for example, as 3940225 + 68459076 = 1985^2 + 8274^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72399301 - 2³ = 72399293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72399361) 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, 19861 + ... + 23221.

It is an arithmetic number, because the mean of its divisors is an integer number (9754843).

Almost surely, 2^72399301 is an apocalyptic number.

It is an amenable number.

72399301 is a deficient number, since it is larger than the sum of its proper divisors (5639443).

72399301 is a wasteful number, since it uses less digits than its factorization.

72399301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5031.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 72399301 is about 8508.7778793432. Note that the first 3 decimals coincide. The cubic root of 72399301 is about 416.7844024265.

The spelling of 72399301 in words is "seventy-two million, three hundred ninety-nine thousand, three hundred one".