3129472 has 32 divisors (see below), whose sum is σ = 6511680. Its totient is φ = 1495296.

The previous prime is 3129463. The next prime is 3129487. The reversal of 3129472 is 2749213.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 3129472.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2413 + ... + 3475.

It is an arithmetic number, because the mean of its divisors is an integer number (203490).

Almost surely, 2^3129472 is an apocalyptic number.

3129472 is a gapful number since it is divisible by the number (32) 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 3129472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3255840).

3129472 is an abundant number, since it is smaller than the sum of its proper divisors (3382208).

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

3129472 is a wasteful number, since it uses less digits than its factorization.

3129472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100 (or 1088 counting only the distinct ones).

The product of its digits is 3024, while the sum is 28.

The square root of 3129472 is about 1769.0313733792. The cubic root of 3129472 is about 146.2705934427.

The spelling of 3129472 in words is "three million, one hundred twenty-nine thousand, four hundred seventy-two".