428587250 has 64 divisors (see below), whose sum is σ = 987517440. Its totient is φ = 135633600.

The previous prime is 428587249. The next prime is 428587253. The reversal of 428587250 is 52785824.

It is a junction number, because it is equal to n+sod(n) for n = 428587198 and 428587207.

It is not an unprimeable number, because it can be changed into a prime (428587253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13331 + ... + 32169.

It is an arithmetic number, because the mean of its divisors is an integer number (15429960).

Almost surely, 2^428587250 is an apocalyptic number.

428587250 is an abundant number, since it is smaller than the sum of its proper divisors (558930190).

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

428587250 is a wasteful number, since it uses less digits than its factorization.

428587250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18876 (or 18866 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 41.

The square root of 428587250 is about 20702.3489005475. The cubic root of 428587250 is about 753.9567187571.

The spelling of 428587250 in words is "four hundred twenty-eight million, five hundred eighty-seven thousand, two hundred fifty".