428890503 has 4 divisors (see below), whose sum is σ = 571854008. Its totient is φ = 285927000.

The previous prime is 428890493. The next prime is 428890523. The reversal of 428890503 is 305098824.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 428890503 - 2¹⁶ = 428824967 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 (428890523) 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, 71481748 + ... + 71481753.

It is an arithmetic number, because the mean of its divisors is an integer number (142963502).

Almost surely, 2^428890503 is an apocalyptic number.

428890503 is a deficient number, since it is larger than the sum of its proper divisors (142963505).

428890503 is a wasteful number, since it uses less digits than its factorization.

428890503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142963504.

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

The square root of 428890503 is about 20709.6717260318. The cubic root of 428890503 is about 754.1345010969.

The spelling of 428890503 in words is "four hundred twenty-eight million, eight hundred ninety thousand, five hundred three".