1628442 has 12 divisors (see below), whose sum is σ = 3528330. Its totient is φ = 542808.

The previous prime is 1628441. The next prime is 1628467. The reversal of 1628442 is 2448261.

It can be written as a sum of positive squares in only one way, i.e., 1279161 + 349281 = 1131^2 + 591^2 .

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (1628441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45217 + ... + 45252.

2^1628442 is an apocalyptic number.

1628442 is an abundant number, since it is smaller than the sum of its proper divisors (1899888).

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

1628442 is a wasteful number, since it uses less digits than its factorization.

1628442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90477 (or 90474 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 1628442 is about 1276.1042277181. The cubic root of 1628442 is about 117.6496839904.

The spelling of 1628442 in words is "one million, six hundred twenty-eight thousand, four hundred forty-two".