72143324 has 48 divisors (see below), whose sum is σ = 143410176. Its totient is φ = 31459200.

The previous prime is 72143321. The next prime is 72143327. The reversal of 72143324 is 42334127.

It is an interprime number because it is at equal distance from previous prime (72143321) and next prime (72143327).

Its product of digits (4032) is a multiple of the sum of its prime divisors (504).

It is a junction number, because it is equal to n+sod(n) for n = 72143293 and 72143302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72143321) 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 15 ways as a sum of consecutive naturals, for example, 309512 + ... + 309744.

It is an arithmetic number, because the mean of its divisors is an integer number (2987712).

Almost surely, 2^72143324 is an apocalyptic number.

It is an amenable number.

72143324 is a deficient number, since it is larger than the sum of its proper divisors (71266852).

72143324 is a wasteful number, since it uses less digits than its factorization.

72143324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506 (or 504 counting only the distinct ones).

The product of its digits is 4032, while the sum is 26.

The square root of 72143324 is about 8493.7226232083. The cubic root of 72143324 is about 416.2926241796.

The spelling of 72143324 in words is "seventy-two million, one hundred forty-three thousand, three hundred twenty-four".