428535 has 24 divisors (see below), whose sum is σ = 758160. Its totient is φ = 223872.

The previous prime is 428531. The next prime is 428539. The reversal of 428535 is 535824.

428535 = T₂ + T₃ + ... + T₁₃₆.

It is an interprime number because it is at equal distance from previous prime (428531) and next prime (428539).

It is not a de Polignac number, because 428535 - 2² = 428531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 428499 and 428508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3952 + ... + 4058.

It is an arithmetic number, because the mean of its divisors is an integer number (31590).

2⁴²⁸⁵³⁵ is an apocalyptic number.

428535 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

428535 is a deficient number, since it is larger than the sum of its proper divisors (329625).

428535 is a wasteful number, since it uses less digits than its factorization.

428535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 204 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 428535 is about 654.6258473357. The cubic root of 428535 is about 75.3926078680.

The spelling of 428535 in words is "four hundred twenty-eight thousand, five hundred thirty-five".