72329837 has 4 divisors (see below), whose sum is σ = 73046076. Its totient is φ = 71613600.

The previous prime is 72329821. The next prime is 72329839. The reversal of 72329837 is 73892327.

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 34703881 + 37625956 = 5891^2 + 6134^2 .

It is a cyclic number.

It is not a de Polignac number, because 72329837 - 2⁴ = 72329821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72329794 and 72329803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72329839) 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, 357968 + ... + 358169.

It is an arithmetic number, because the mean of its divisors is an integer number (18261519).

Almost surely, 2^72329837 is an apocalyptic number.

It is an amenable number.

72329837 is a deficient number, since it is larger than the sum of its proper divisors (716239).

72329837 is a wasteful number, since it uses less digits than its factorization.

72329837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716238.

The product of its digits is 127008, while the sum is 41.

The square root of 72329837 is about 8504.6949974705. The cubic root of 72329837 is about 416.6510642335.

The spelling of 72329837 in words is "seventy-two million, three hundred twenty-nine thousand, eight hundred thirty-seven".