72232093 has 2 divisors, whose sum is σ = 72232094. Its totient is φ = 72232092.

The previous prime is 72232079. The next prime is 72232109. The reversal of 72232093 is 39023227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47361924 + 24870169 = 6882^2 + 4987^2 .

It is an emirp because it is prime and its reverse (39023227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72232093 - 2¹³ = 72223901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72232003) 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 as a sum of consecutive naturals, namely, 36116046 + 36116047.

It is an arithmetic number, because the mean of its divisors is an integer number (36116047).

Almost surely, 2^72232093 is an apocalyptic number.

It is an amenable number.

72232093 is a deficient number, since it is larger than the sum of its proper divisors (1).

72232093 is an equidigital number, since it uses as much as digits as its factorization.

72232093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 72232093 is about 8498.9465817829. The cubic root of 72232093 is about 416.4632970919.

It can be divided in two parts, 7223 and 2093, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 72232093 in words is "seventy-two million, two hundred thirty-two thousand, ninety-three".