72853733 has 4 divisors (see below), whose sum is σ = 76688160. Its totient is φ = 69019308.

The previous prime is 72853667. The next prime is 72853757. The reversal of 72853733 is 33735827.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33735827 = 109 ⋅309503.

It is a cyclic number.

It is not a de Polignac number, because 72853733 - 2⁸ = 72853477 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 (72853783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1917185 + ... + 1917222.

It is an arithmetic number, because the mean of its divisors is an integer number (19172040).

Almost surely, 2^72853733 is an apocalyptic number.

It is an amenable number.

72853733 is a deficient number, since it is larger than the sum of its proper divisors (3834427).

72853733 is a wasteful number, since it uses less digits than its factorization.

72853733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3834426.

The product of its digits is 105840, while the sum is 38.

The square root of 72853733 is about 8535.4398246370. The cubic root of 72853733 is about 417.6546008529.

The spelling of 72853733 in words is "seventy-two million, eight hundred fifty-three thousand, seven hundred thirty-three".