3431428 has 48 divisors (see below), whose sum is σ = 8072064. Its totient is φ = 1232640.

The previous prime is 3431411. The next prime is 3431431. The reversal of 3431428 is 8241343.

It is a nialpdrome in base 7.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3576 + ... + 4432.

It is an arithmetic number, because the mean of its divisors is an integer number (168168).

Almost surely, 2^3431428 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 3431428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4036032).

3431428 is an abundant number, since it is smaller than the sum of its proper divisors (4640636).

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

3431428 is a wasteful number, since it uses less digits than its factorization.

3431428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892 (or 890 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 3431428 is about 1852.4114013901. The cubic root of 3431428 is about 150.8313541926.

It can be divided in two parts, 343 and 1428, that added together give a palindrome (1771).

The spelling of 3431428 in words is "three million, four hundred thirty-one thousand, four hundred twenty-eight".