3171428 has 24 divisors (see below), whose sum is σ = 6068160. Its totient is φ = 1441440.

The previous prime is 3171409. The next prime is 3171431. The reversal of 3171428 is 8241713.

3171428 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 3171397 and 3171406.

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, 3263 + ... + 4121.

It is an arithmetic number, because the mean of its divisors is an integer number (252840).

Almost surely, 2^3171428 is an apocalyptic number.

It is an amenable number.

3171428 is a deficient number, since it is larger than the sum of its proper divisors (2896732).

3171428 is a wasteful number, since it uses less digits than its factorization.

3171428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947 (or 945 counting only the distinct ones).

The product of its digits is 1344, while the sum is 26.

The square root of 3171428 is about 1780.8503586770. The cubic root of 3171428 is about 146.9213641464.

It can be divided in two parts, 317 and 1428, that multiplied together give a triangular number (452676 = T₉₅₁).

The spelling of 3171428 in words is "three million, one hundred seventy-one thousand, four hundred twenty-eight".