428532033 has 4 divisors (see below), whose sum is σ = 571376048. Its totient is φ = 285688020.

The previous prime is 428532031. The next prime is 428532089. The reversal of 428532033 is 330235824.

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 not a de Polignac number, because 428532033 - 2¹ = 428532031 is a prime.

It is a super-2 number, since 2×428532033² = 367279406614226178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428532031) 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, 71422003 + ... + 71422008.

It is an arithmetic number, because the mean of its divisors is an integer number (142844012).

Almost surely, 2^428532033 is an apocalyptic number.

It is an amenable number.

428532033 is a deficient number, since it is larger than the sum of its proper divisors (142844015).

428532033 is a wasteful number, since it uses less digits than its factorization.

428532033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142844014.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 428532033 is about 20701.0152649574. The cubic root of 428532033 is about 753.9243387177.

Adding to 428532033 its reverse (330235824), we get a palindrome (758767857).

The spelling of 428532033 in words is "four hundred twenty-eight million, five hundred thirty-two thousand, thirty-three".