428503902 has 32 divisors (see below), whose sum is σ = 880588800. Its totient is φ = 138955008.

The previous prime is 428503891. The next prime is 428503909. The reversal of 428503902 is 209305824.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428503909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28099 + ... + 40577.

It is an arithmetic number, because the mean of its divisors is an integer number (27518400).

Almost surely, 2^428503902 is an apocalyptic number.

428503902 is an abundant number, since it is smaller than the sum of its proper divisors (452084898).

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

428503902 is a wasteful number, since it uses less digits than its factorization.

428503902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12640.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 428503902 is about 20700.3357943778. The cubic root of 428503902 is about 753.9078412270.

The spelling of 428503902 in words is "four hundred twenty-eight million, five hundred three thousand, nine hundred two".