72748123 has 8 divisors (see below), whose sum is σ = 83918592. Its totient is φ = 61772136.

The previous prime is 72748111. The next prime is 72748127. The reversal of 72748123 is 32184727.

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 72748123 - 2²¹ = 70650971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72748127) 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, 47815 + ... + 49312.

It is an arithmetic number, because the mean of its divisors is an integer number (10489824).

Almost surely, 2^72748123 is an apocalyptic number.

72748123 is a deficient number, since it is larger than the sum of its proper divisors (11170469).

72748123 is a wasteful number, since it uses less digits than its factorization.

72748123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97241.

The product of its digits is 18816, while the sum is 34.

The square root of 72748123 is about 8529.2510222176. The cubic root of 72748123 is about 417.4526902062.

The spelling of 72748123 in words is "seventy-two million, seven hundred forty-eight thousand, one hundred twenty-three".