428885733 has 4 divisors (see below), whose sum is σ = 571847648. Its totient is φ = 285923820.

The previous prime is 428885729. The next prime is 428885773. The reversal of 428885733 is 337588824.

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 428885733 - 2² = 428885729 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 (428885773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71480953 + ... + 71480958.

It is an arithmetic number, because the mean of its divisors is an integer number (142961912).

Almost surely, 2^428885733 is an apocalyptic number.

It is an amenable number.

428885733 is a deficient number, since it is larger than the sum of its proper divisors (142961915).

428885733 is a wasteful number, since it uses less digits than its factorization.

428885733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142961914.

The product of its digits is 1290240, while the sum is 48.

The square root of 428885733 is about 20709.5565621285. The cubic root of 428885733 is about 754.1317053290.

The spelling of 428885733 in words is "four hundred twenty-eight million, eight hundred eighty-five thousand, seven hundred thirty-three".