428546 has 12 divisors (see below), whose sum is σ = 663558. Its totient is φ = 207552.

The previous prime is 428539. The next prime is 428551. The reversal of 428546 is 645824.

It can be written as a sum of positive squares in only one way, i.e., 373321 + 55225 = 611^2 + 235^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

428546 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, 4370 + ... + 4466.

2⁴²⁸⁵⁴⁶ is an apocalyptic number.

428546 is a deficient number, since it is larger than the sum of its proper divisors (235012).

428546 is an equidigital number, since it uses as much as digits as its factorization.

428546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 146 counting only the distinct ones).

The product of its digits is 7680, while the sum is 29.

The square root of 428546 is about 654.6342490277. The cubic root of 428546 is about 75.3932529429.

The spelling of 428546 in words is "four hundred twenty-eight thousand, five hundred forty-six".