72327429 has 6 divisors (see below), whose sum is σ = 104472966. Its totient is φ = 48218280.

The previous prime is 72327427. The next prime is 72327439. The reversal of 72327429 is 92472327.

It can be written as a sum of positive squares in only one way, i.e., 59259204 + 13068225 = 7698^2 + 3615^2 .

It is not a de Polignac number, because 72327429 - 2¹ = 72327427 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 72327393 and 72327402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72327427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4018182 + ... + 4018199.

It is an arithmetic number, because the mean of its divisors is an integer number (17412161).

Almost surely, 2^72327429 is an apocalyptic number.

It is an amenable number.

72327429 is a deficient number, since it is larger than the sum of its proper divisors (32145537).

72327429 is a wasteful number, since it uses less digits than its factorization.

72327429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8036387 (or 8036384 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 72327429 is about 8504.5534274293. The cubic root of 72327429 is about 416.6464404760.

The spelling of 72327429 in words is "seventy-two million, three hundred twenty-seven thousand, four hundred twenty-nine".