72098933 has 4 divisors (see below), whose sum is σ = 72155820. Its totient is φ = 72042048.

The previous prime is 72098909. The next prime is 72098941. The reversal of 72098933 is 33989027.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37724164 + 34374769 = 6142^2 + 5863^2 .

It is a cyclic number.

It is not a de Polignac number, because 72098933 - 2¹² = 72094837 is a prime.

It is a super-2 number, since 2×72098933² = 10396512279476978, which contains 22 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 (72098993) 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 in 3 ways as a sum of consecutive naturals, for example, 26498 + ... + 29091.

It is an arithmetic number, because the mean of its divisors is an integer number (18038955).

Almost surely, 2^72098933 is an apocalyptic number.

It is an amenable number.

72098933 is a deficient number, since it is larger than the sum of its proper divisors (56887).

72098933 is a wasteful number, since it uses less digits than its factorization.

72098933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56886.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 72098933 is about 8491.1090559479. The cubic root of 72098933 is about 416.2072227110.

The spelling of 72098933 in words is "seventy-two million, ninety-eight thousand, nine hundred thirty-three".