628241 has 4 divisors (see below), whose sum is σ = 630000. Its totient is φ = 626484.

The previous prime is 628231. The next prime is 628261. The reversal of 628241 is 142826.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 142826 = 2 ⋅71413.

It is a cyclic number.

It is not a de Polignac number, because 628241 - 2¹⁰ = 627217 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (628231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131 + ... + 1128.

It is an arithmetic number, because the mean of its divisors is an integer number (157500).

2⁶²⁸²⁴¹ is an apocalyptic number.

It is an amenable number.

628241 is a deficient number, since it is larger than the sum of its proper divisors (1759).

628241 is a wasteful number, since it uses less digits than its factorization.

628241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758.

The product of its digits is 768, while the sum is 23.

The square root of 628241 is about 792.6165529435. The cubic root of 628241 is about 85.6463301327.

The spelling of 628241 in words is "six hundred twenty-eight thousand, two hundred forty-one".