428392503 has 192 divisors, whose sum is σ = 905379840. Its totient is φ = 193881600.

The previous prime is 428392501. The next prime is 428392507. The reversal of 428392503 is 305293824.

It is not a de Polignac number, because 428392503 - 2¹ = 428392501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428392501) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 13819098 + ... + 13819128.

It is an arithmetic number, because the mean of its divisors is an integer number (4715520).

Almost surely, 2^428392503 is an apocalyptic number.

428392503 is an abundant number, since it is smaller than the sum of its proper divisors (476987337).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428392503 is a wasteful number, since it uses less digits than its factorization.

428392503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 428392503 is about 20697.6448660228. The cubic root of 428392503 is about 753.8425039313.

The spelling of 428392503 in words is "four hundred twenty-eight million, three hundred ninety-two thousand, five hundred three".