72993103 has 4 divisors (see below), whose sum is σ = 73011240. Its totient is φ = 72974968.

The previous prime is 72993097. The next prime is 72993131. The reversal of 72993103 is 30139927.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30139927 = 419 ⋅71933.

It is a cyclic number.

It is not a de Polignac number, because 72993103 - 2⁵ = 72993071 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 (72993803) 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, 25 + ... + 12082.

It is an arithmetic number, because the mean of its divisors is an integer number (18252810).

Almost surely, 2^72993103 is an apocalyptic number.

72993103 is a deficient number, since it is larger than the sum of its proper divisors (18137).

72993103 is a wasteful number, since it uses less digits than its factorization.

72993103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18136.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 72993103 is about 8543.6001193876. The cubic root of 72993103 is about 417.9207571677.

The spelling of 72993103 in words is "seventy-two million, nine hundred ninety-three thousand, one hundred three".