18934212 has 48 divisors (see below), whose sum is σ = 48513024. Its totient is φ = 5700000.

The previous prime is 18934199. The next prime is 18934213. The reversal of 18934212 is 21243981.

It is a self number, because there is not a number n which added to its sum of digits gives 18934212.

It is not an unprimeable number, because it can be changed into a prime (18934213) 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, 24837 + ... + 25587.

It is an arithmetic number, because the mean of its divisors is an integer number (1010688).

Almost surely, 2^18934212 is an apocalyptic number.

18934212 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 18934212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24256512).

18934212 is an abundant number, since it is smaller than the sum of its proper divisors (29578812).

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

18934212 is a wasteful number, since it uses less digits than its factorization.

18934212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960 (or 958 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 18934212 is about 4351.3459986537. The cubic root of 18934212 is about 266.5318283591.

It can be divided in two parts, 1893 and 4212, that added together give a triangular number (6105 = T₁₁₀).

The spelling of 18934212 in words is "eighteen million, nine hundred thirty-four thousand, two hundred twelve".