72093298 has 4 divisors (see below), whose sum is σ = 108139950. Its totient is φ = 36046648.

The previous prime is 72093271. The next prime is 72093299. The reversal of 72093298 is 89239027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89239027 = 83 ⋅1075169.

It can be written as a sum of positive squares in only one way, i.e., 69006249 + 3087049 = 8307^2 + 1757^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 72093298.

It is not an unprimeable number, because it can be changed into a prime (72093299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18023323 + ... + 18023326.

Almost surely, 2^72093298 is an apocalyptic number.

72093298 is a deficient number, since it is larger than the sum of its proper divisors (36046652).

72093298 is a wasteful number, since it uses less digits than its factorization.

72093298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36046651.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 72093298 is about 8490.7772317969. Note that the first 3 decimals coincide. The cubic root of 72093298 is about 416.1963793291.

The spelling of 72093298 in words is "seventy-two million, ninety-three thousand, two hundred ninety-eight".