18990852 has 24 divisors (see below), whose sum is σ = 44721600. Its totient is φ = 6271776.

The previous prime is 18990841. The next prime is 18990869. The reversal of 18990852 is 25809981.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5952 + ... + 8567.

It is an arithmetic number, because the mean of its divisors is an integer number (1863400).

Almost surely, 2^18990852 is an apocalyptic number.

18990852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18990852 is an abundant number, since it is smaller than the sum of its proper divisors (25730748).

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

18990852 is a wasteful number, since it uses less digits than its factorization.

18990852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14635 (or 14633 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 42.

The square root of 18990852 is about 4357.8494696352. The cubic root of 18990852 is about 266.7973324915.

The spelling of 18990852 in words is "eighteen million, nine hundred ninety thousand, eight hundred fifty-two".