72593421 has 8 divisors (see below), whose sum is σ = 96913824. Its totient is φ = 48334320.

The previous prime is 72593419. The next prime is 72593449. The reversal of 72593421 is 12439527.

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

It is not a de Polignac number, because 72593421 - 2¹ = 72593419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72593461) 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 7 ways as a sum of consecutive naturals, for example, 12486 + ... + 17351.

It is an arithmetic number, because the mean of its divisors is an integer number (12114228).

Almost surely, 2^72593421 is an apocalyptic number.

It is an amenable number.

72593421 is a deficient number, since it is larger than the sum of its proper divisors (24320403).

72593421 is a wasteful number, since it uses less digits than its factorization.

72593421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30651.

The product of its digits is 15120, while the sum is 33.

The square root of 72593421 is about 8520.1772868879. The cubic root of 72593421 is about 417.1565698597.

The spelling of 72593421 in words is "seventy-two million, five hundred ninety-three thousand, four hundred twenty-one".