72326077 has 4 divisors (see below), whose sum is σ = 72348156. Its totient is φ = 72304000.

The previous prime is 72326057. The next prime is 72326081. The reversal of 72326077 is 77062327.

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 37527876 + 34798201 = 6126^2 + 5899^2 .

It is a cyclic number.

It is not a de Polignac number, because 72326077 - 2¹⁹ = 71801789 is a prime.

It is a super-2 number, since 2×72326077² = 10462122828419858, 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 (72326047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5038 + ... + 13039.

It is an arithmetic number, because the mean of its divisors is an integer number (18087039).

Almost surely, 2^72326077 is an apocalyptic number.

It is an amenable number.

72326077 is a deficient number, since it is larger than the sum of its proper divisors (22079).

72326077 is a wasteful number, since it uses less digits than its factorization.

72326077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22078.

The product of its (nonzero) digits is 24696, while the sum is 34.

The square root of 72326077 is about 8504.4739402270. The cubic root of 72326077 is about 416.6438443677.

The spelling of 72326077 in words is "seventy-two million, three hundred twenty-six thousand, seventy-seven".