72031773 has 8 divisors (see below), whose sum is σ = 104773536. Its totient is φ = 43655600.

The previous prime is 72031769. The next prime is 72031781. The reversal of 72031773 is 37713027.

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 72031773 - 2² = 72031769 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72031773.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72031763) 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, 1091358 + ... + 1091423.

It is an arithmetic number, because the mean of its divisors is an integer number (13096692).

Almost surely, 2^72031773 is an apocalyptic number.

It is an amenable number.

72031773 is a deficient number, since it is larger than the sum of its proper divisors (32741763).

72031773 is a wasteful number, since it uses less digits than its factorization.

72031773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2182795.

The product of its (nonzero) digits is 6174, while the sum is 30.

The square root of 72031773 is about 8487.1534097128. The cubic root of 72031773 is about 416.0779505215.

The spelling of 72031773 in words is "seventy-two million, thirty-one thousand, seven hundred seventy-three".