628470 has 24 divisors (see below), whose sum is σ = 1634256. Its totient is φ = 167568.

The previous prime is 628447. The next prime is 628477. The reversal of 628470 is 74826.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3402 + ... + 3581.

It is an arithmetic number, because the mean of its divisors is an integer number (68094).

2⁶²⁸⁴⁷⁰ is an apocalyptic number.

628470 is an abundant number, since it is smaller than the sum of its proper divisors (1005786).

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

628470 is a wasteful number, since it uses less digits than its factorization.

628470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6996 (or 6993 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 628470 is about 792.7609980316. The cubic root of 628470 is about 85.6567351774.

It can be divided in two parts, 6 and 28470, that multiplied together give a triangular number (170820 = T₅₈₄).

The spelling of 628470 in words is "six hundred twenty-eight thousand, four hundred seventy".