428533065 has 16 divisors (see below), whose sum is σ = 761836800. Its totient is φ = 228550896.

The previous prime is 428533019. The next prime is 428533109. The reversal of 428533065 is 560335824.

It is a happy number.

It is not a de Polignac number, because 428533065 - 2⁹ = 428532553 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1587025 + ... + 1587294.

It is an arithmetic number, because the mean of its divisors is an integer number (47614800).

Almost surely, 2^428533065 is an apocalyptic number.

428533065 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

428533065 is a deficient number, since it is larger than the sum of its proper divisors (333303735).

428533065 is a wasteful number, since it uses less digits than its factorization.

428533065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3174333 (or 3174327 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 428533065 is about 20701.0401912561. The cubic root of 428533065 is about 753.9249439228.

Adding to 428533065 its reverse (560335824), we get a palindrome (988868889).

The spelling of 428533065 in words is "four hundred twenty-eight million, five hundred thirty-three thousand, sixty-five".