1031628 has 48 divisors (see below), whose sum is σ = 2751840. Its totient is φ = 297984.

The previous prime is 1031623. The next prime is 1031629. The reversal of 1031628 is 8261301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031623) 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, 2458 + ... + 2846.

It is an arithmetic number, because the mean of its divisors is an integer number (57330).

2^1031628 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 1031628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1375920).

1031628 is an abundant number, since it is smaller than the sum of its proper divisors (1720212).

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

1031628 is a wasteful number, since it uses less digits than its factorization.

1031628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1031628 is about 1015.6908978621. The cubic root of 1031628 is about 101.0433431590.

Adding to 1031628 its reverse (8261301), we get a palindrome (9292929).

The spelling of 1031628 in words is "one million, thirty-one thousand, six hundred twenty-eight".