3128442 has 16 divisors (see below), whose sum is σ = 6625152. Its totient is φ = 981440.

The previous prime is 3128401. The next prime is 3128443. The reversal of 3128442 is 2448213.

It is not an unprimeable number, because it can be changed into a prime (3128443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15234 + ... + 15437.

It is an arithmetic number, because the mean of its divisors is an integer number (414072).

Almost surely, 2^3128442 is an apocalyptic number.

3128442 is an abundant number, since it is smaller than the sum of its proper divisors (3496710).

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

3128442 is a wasteful number, since it uses less digits than its factorization.

3128442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30693.

The product of its digits is 1536, while the sum is 24.

The square root of 3128442 is about 1768.7402296550. The cubic root of 3128442 is about 146.2545443836.

It can be divided in two parts, 3128 and 442, that added together give a triangular number (3570 = T₈₄).

The spelling of 3128442 in words is "three million, one hundred twenty-eight thousand, four hundred forty-two".