428554 has 12 divisors (see below), whose sum is σ = 747954. Its totient is φ = 183624.

The previous prime is 428551. The next prime is 428557. The reversal of 428554 is 455824.

428554 = T₁₀₇ + T₁₀₈ + ... + T₁₅₅.

It is an interprime number because it is at equal distance from previous prime (428551) and next prime (428557).

It can be written as a sum of positive squares in only one way, i.e., 354025 + 74529 = 595^2 + 273^2 .

It is a d-powerful number, because it can be written as 4² + 2¹⁵ + 5² + 8⁴ + 5⁸ + 4⁵ .

It is not an unprimeable number, because it can be changed into a prime (428551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2089 + ... + 2284.

2⁴²⁸⁵⁵⁴ is an apocalyptic number.

428554 is a deficient number, since it is larger than the sum of its proper divisors (319400).

428554 is a wasteful number, since it uses less digits than its factorization.

428554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4389 (or 4382 counting only the distinct ones).

The product of its digits is 6400, while the sum is 28.

The square root of 428554 is about 654.6403592813. The cubic root of 428554 is about 75.3937220814.

The spelling of 428554 in words is "four hundred twenty-eight thousand, five hundred fifty-four".