18723852 has 48 divisors (see below), whose sum is σ = 55480320. Its totient is φ = 5349456.

The previous prime is 18723833. The next prime is 18723871. The reversal of 18723852 is 25832781.

It is an interprime number because it is at equal distance from previous prime (18723833) and next prime (18723871).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11628 + ... + 13139.

It is an arithmetic number, because the mean of its divisors is an integer number (1155840).

Almost surely, 2^18723852 is an apocalyptic number.

18723852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18723852 is an abundant number, since it is smaller than the sum of its proper divisors (36756468).

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

18723852 is a wasteful number, since it uses less digits than its factorization.

18723852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24787 (or 24779 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 18723852 is about 4327.1066545672. The cubic root of 18723852 is about 265.5410897495.

The spelling of 18723852 in words is "eighteen million, seven hundred twenty-three thousand, eight hundred fifty-two".