18062500 has 63 divisors (see below), whose sum is σ = 41972119. Its totient is φ = 6800000.

The previous prime is 18062497. The next prime is 18062501. The reversal of 18062500 is 526081.

18062500 = 856² + 857² + ... + 879².

It is a happy number.

The square root of 18062500 is 4250.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 10 ways, for example, as 17757796 + 304704 = 4214^2 + 552^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18062501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 1062492 + ... + 1062508.

Almost surely, 2^18062500 is an apocalyptic number.

18062500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18062500 is the 4250-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18062500

18062500 is an abundant number, since it is smaller than the sum of its proper divisors (23909619).

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

18062500 is an frugal number, since it uses more digits than its factorization.

18062500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68 (or 24 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The cubic root of 18062500 is about 262.3771155744.

Adding to 18062500 its reverse (526081), we get a palindrome (18588581).

The spelling of 18062500 in words is "eighteen million, sixty-two thousand, five hundred".