72321494 has 8 divisors (see below), whose sum is σ = 123979728. Its totient is φ = 30994920.

The previous prime is 72321493. The next prime is 72321497. The reversal of 72321494 is 49412327.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 72321494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72321493) 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, 2582897 + ... + 2582924.

It is an arithmetic number, because the mean of its divisors is an integer number (15497466).

Almost surely, 2^72321494 is an apocalyptic number.

72321494 is a deficient number, since it is larger than the sum of its proper divisors (51658234).

72321494 is a wasteful number, since it uses less digits than its factorization.

72321494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5165830.

The product of its digits is 12096, while the sum is 32.

The square root of 72321494 is about 8504.2044895452. The cubic root of 72321494 is about 416.6350438578.

The spelling of 72321494 in words is "seventy-two million, three hundred twenty-one thousand, four hundred ninety-four".