18252608 has 42 divisors (see below), whose sum is σ = 39828978. Its totient is φ = 8293120.

The previous prime is 18252607. The next prime is 18252643. The reversal of 18252608 is 80625281.

It can be written as a sum of positive squares in only one way, i.e., 13017664 + 5234944 = 3608^2 + 2288^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18252601) 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, 6566 + ... + 8922.

It is an arithmetic number, because the mean of its divisors is an integer number (948309).

Almost surely, 2^18252608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18252608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19914489).

18252608 is an abundant number, since it is smaller than the sum of its proper divisors (21576370).

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

18252608 is a wasteful number, since it uses less digits than its factorization.

18252608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2391 (or 2370 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 18252608 is about 4272.3071050663. The cubic root of 18252608 is about 263.2944121650.

Adding to 18252608 its reverse (80625281), we get a palindrome (98877889).

The spelling of 18252608 in words is "eighteen million, two hundred fifty-two thousand, six hundred eight".