1994172 has 24 divisors (see below), whose sum is σ = 4690896. Its totient is φ = 659328.

The previous prime is 1994143. The next prime is 1994191. The reversal of 1994172 is 2714991.

It is a congruent 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, 1038 + ... + 2250.

It is an arithmetic number, because the mean of its divisors is an integer number (195454).

2^1994172 is an apocalyptic number.

1994172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1994172 is an abundant number, since it is smaller than the sum of its proper divisors (2696724).

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

1994172 is a wasteful number, since it uses less digits than its factorization.

1994172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357 (or 1355 counting only the distinct ones).

The product of its digits is 4536, while the sum is 33.

The square root of 1994172 is about 1412.1515499407. The cubic root of 1994172 is about 125.8696055933.

It can be divided in two parts, 199 and 4172, that added together give a triangular number (4371 = T₉₃).

The spelling of 1994172 in words is "one million, nine hundred ninety-four thousand, one hundred seventy-two".