628542 has 12 divisors (see below), whose sum is σ = 1361880. Its totient is φ = 209508.

The previous prime is 628499. The next prime is 628547. The reversal of 628542 is 245826.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 628542.

It is not an unprimeable number, because it can be changed into a prime (628547) by changing a digit.

628542 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17442 + ... + 17477.

It is an arithmetic number, because the mean of its divisors is an integer number (113490).

2⁶²⁸⁵⁴² is an apocalyptic number.

628542 is an abundant number, since it is smaller than the sum of its proper divisors (733338).

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

628542 is a wasteful number, since it uses less digits than its factorization.

628542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34927 (or 34924 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 628542 is about 792.8064076431. The cubic root of 628542 is about 85.6600061102.

The spelling of 628542 in words is "six hundred twenty-eight thousand, five hundred forty-two".