3149172 has 48 divisors (see below), whose sum is σ = 8796480. Its totient is φ = 968544.

The previous prime is 3149143. The next prime is 3149173. The reversal of 3149172 is 2719413.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3149173) 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, 283 + ... + 2525.

It is an arithmetic number, because the mean of its divisors is an integer number (183260).

Almost surely, 2^3149172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3149172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4398240).

3149172 is an abundant number, since it is smaller than the sum of its proper divisors (5647308).

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

3149172 is a wasteful number, since it uses less digits than its factorization.

3149172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2269 (or 2261 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 3149172 is about 1774.5906570249. The cubic root of 3149172 is about 146.5768757105.

It can be divided in two parts, 3149 and 172, that added together give a triangular number (3321 = T₈₁).

The spelling of 3149172 in words is "three million, one hundred forty-nine thousand, one hundred seventy-two".