72457423 has 8 divisors (see below), whose sum is σ = 74012400. Its totient is φ = 70918848.

The previous prime is 72457403. The next prime is 72457453. The reversal of 72457423 is 32475427.

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

It is a cyclic number.

It is not a de Polignac number, because 72457423 - 2²⁵ = 38902991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72457403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5043 + ... + 13051.

It is an arithmetic number, because the mean of its divisors is an integer number (9251550).

Almost surely, 2^72457423 is an apocalyptic number.

72457423 is a deficient number, since it is larger than the sum of its proper divisors (1554977).

72457423 is a wasteful number, since it uses less digits than its factorization.

72457423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8201.

The product of its digits is 47040, while the sum is 34.

The square root of 72457423 is about 8512.1926082532. The cubic root of 72457423 is about 416.8959037955.

The spelling of 72457423 in words is "seventy-two million, four hundred fifty-seven thousand, four hundred twenty-three".