18263652 has 48 divisors (see below), whose sum is σ = 47077632. Its totient is φ = 5464480.

The previous prime is 18263647. The next prime is 18263657. The reversal of 18263652 is 25636281.

It is an interprime number because it is at equal distance from previous prime (18263647) and next prime (18263657).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (18263657) 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, 10123 + ... + 11789.

It is an arithmetic number, because the mean of its divisors is an integer number (980784).

Almost surely, 2^18263652 is an apocalyptic number.

18263652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18263652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23538816).

18263652 is an abundant number, since it is smaller than the sum of its proper divisors (28813980).

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

18263652 is a wasteful number, since it uses less digits than its factorization.

18263652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768 (or 1766 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 18263652 is about 4273.5994196930. The cubic root of 18263652 is about 263.3475048009.

It can be divided in two parts, 18263 and 652, that added together give a triangular number (18915 = T₁₉₄).

The spelling of 18263652 in words is "eighteen million, two hundred sixty-three thousand, six hundred fifty-two".