72398111 has 8 divisors (see below), whose sum is σ = 74285904. Its totient is φ = 70519680.

The previous prime is 72398101. The next prime is 72398129. The reversal of 72398111 is 11189327.

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 72398111 - 2¹⁸ = 72135967 is a prime.

It is a super-3 number, since 3×72398111³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72398101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14951 + ... + 19191.

It is an arithmetic number, because the mean of its divisors is an integer number (9285738).

Almost surely, 2^72398111 is an apocalyptic number.

72398111 is a deficient number, since it is larger than the sum of its proper divisors (1887793).

72398111 is a wasteful number, since it uses less digits than its factorization.

72398111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4681.

The product of its digits is 3024, while the sum is 32.

The square root of 72398111 is about 8508.7079512697. The cubic root of 72398111 is about 416.7821189047.

The spelling of 72398111 in words is "seventy-two million, three hundred ninety-eight thousand, one hundred eleven".