18252308 has 6 divisors (see below), whose sum is σ = 31941546. Its totient is φ = 9126152.

The previous prime is 18252307. The next prime is 18252329. The reversal of 18252308 is 80325281.

It can be written as a sum of positive squares in only one way, i.e., 15147664 + 3104644 = 3892^2 + 1762^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18252301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2281535 + ... + 2281542.

It is an arithmetic number, because the mean of its divisors is an integer number (5323591).

Almost surely, 2^18252308 is an apocalyptic number.

It is an amenable number.

18252308 is a deficient number, since it is larger than the sum of its proper divisors (13689238).

18252308 is a wasteful number, since it uses less digits than its factorization.

18252308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4563081 (or 4563079 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 18252308 is about 4272.2719950865. The cubic root of 18252308 is about 263.2929696541.

Adding to 18252308 its reverse (80325281), we get a palindrome (98577589).

The spelling of 18252308 in words is "eighteen million, two hundred fifty-two thousand, three hundred eight".