428613 has 4 divisors (see below), whose sum is σ = 571488. Its totient is φ = 285740.

The previous prime is 428579. The next prime is 428629. The reversal of 428613 is 316824.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 428613 - 2¹³ = 420421 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428633) 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, 71433 + ... + 71438.

It is an arithmetic number, because the mean of its divisors is an integer number (142872).

2⁴²⁸⁶¹³ is an apocalyptic number.

It is an amenable number.

428613 is a deficient number, since it is larger than the sum of its proper divisors (142875).

428613 is a wasteful number, since it uses less digits than its factorization.

428613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142874.

The product of its digits is 1152, while the sum is 24.

The square root of 428613 is about 654.6854206411. The cubic root of 428613 is about 75.3971817975.

The spelling of 428613 in words is "four hundred twenty-eight thousand, six hundred thirteen".