428653 has 4 divisors (see below), whose sum is σ = 431068. Its totient is φ = 426240.

The previous prime is 428639. The next prime is 428657. The reversal of 428653 is 356824.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 195364 + 233289 = 442^2 + 483^2 .

It is a cyclic number.

It is not a de Polignac number, because 428653 - 2¹⁷ = 297581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428657) 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, 918 + ... + 1303.

It is an arithmetic number, because the mean of its divisors is an integer number (107767).

2⁴²⁸⁶⁵³ is an apocalyptic number.

It is an amenable number.

428653 is a deficient number, since it is larger than the sum of its proper divisors (2415).

428653 is a wasteful number, since it uses less digits than its factorization.

428653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414.

The product of its digits is 5760, while the sum is 28.

The square root of 428653 is about 654.7159689514. The cubic root of 428653 is about 75.3995271871.

It can be divided in two parts, 428 and 653, that added together give a triangular number (1081 = T₄₆).

The spelling of 428653 in words is "four hundred twenty-eight thousand, six hundred fifty-three".