72903061 has 16 divisors (see below), whose sum is σ = 93352320. Its totient is φ = 55270080.

The previous prime is 72903011. The next prime is 72903079. The reversal of 72903061 is 16030927.

It is a cyclic number.

It is not a de Polignac number, because 72903061 - 2¹¹ = 72901013 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 (72903011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9946 + ... + 15643.

It is an arithmetic number, because the mean of its divisors is an integer number (5834520).

Almost surely, 2^72903061 is an apocalyptic number.

It is an amenable number.

72903061 is a deficient number, since it is larger than the sum of its proper divisors (20449259).

72903061 is a wasteful number, since it uses less digits than its factorization.

72903061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25644.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 72903061 is about 8538.3289348678. The cubic root of 72903061 is about 417.7488418172.

Adding to 72903061 its reverse (16030927), we get a palindrome (88933988).

The spelling of 72903061 in words is "seventy-two million, nine hundred three thousand, sixty-one".