428503089 has 48 divisors (see below), whose sum is σ = 686188800. Its totient is φ = 237033216.

The previous prime is 428503063. The next prime is 428503109. The reversal of 428503089 is 980305824.

It is a happy number.

It is not a de Polignac number, because 428503089 - 2⁵ = 428503057 is a prime.

It is a super-2 number, since 2×428503089² = 367229794565083842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428502089) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 752797 + ... + 753365.

It is an arithmetic number, because the mean of its divisors is an integer number (14295600).

Almost surely, 2^428503089 is an apocalyptic number.

428503089 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

428503089 is a deficient number, since it is larger than the sum of its proper divisors (257685711).

428503089 is a wasteful number, since it uses less digits than its factorization.

428503089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742 (or 735 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 428503089 is about 20700.3161570059. The cubic root of 428503089 is about 753.9073644305.

The spelling of 428503089 in words is "four hundred twenty-eight million, five hundred three thousand, eighty-nine".