18060616 has 24 divisors (see below), whose sum is σ = 39393270. Its totient is φ = 7740096.

The previous prime is 18060599. The next prime is 18060617. The reversal of 18060616 is 61606081.

It can be written as a sum of positive squares in only one way, i.e., 13351716 + 4708900 = 3654^2 + 2170^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (18060617) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22645 + ... + 23428.

Almost surely, 2^18060616 is an apocalyptic number.

It is an amenable number.

18060616 is an abundant number, since it is smaller than the sum of its proper divisors (21332654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18060616 is a wasteful number, since it uses less digits than its factorization.

18060616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46093 (or 46082 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 18060616 is about 4249.7783471612. The cubic root of 18060616 is about 262.3679928861.

Adding to 18060616 its reverse (61606081), we get a palindrome (79666697).

The spelling of 18060616 in words is "eighteen million, sixty thousand, six hundred sixteen".