72093406 has 24 divisors (see below), whose sum is σ = 137233656. Its totient is φ = 28087920.

The previous prime is 72093403. The next prime is 72093419. The reversal of 72093406 is 60439027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72093403) 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 11 ways as a sum of consecutive naturals, for example, 32361 + ... + 34516.

It is an arithmetic number, because the mean of its divisors is an integer number (5718069).

Almost surely, 2^72093406 is an apocalyptic number.

72093406 is a deficient number, since it is larger than the sum of its proper divisors (65140250).

72093406 is a wasteful number, since it uses less digits than its factorization.

72093406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66904 (or 66897 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 72093406 is about 8490.7835916363. The cubic root of 72093406 is about 416.1965871578.

The spelling of 72093406 in words is "seventy-two million, ninety-three thousand, four hundred six".