428211250 has 20 divisors (see below), whose sum is σ = 802641510. Its totient is φ = 171284000.

The previous prime is 428211233. The next prime is 428211293. The reversal of 428211250 is 52112824.

It can be written as a sum of positive squares in 5 ways, for example, as 21261321 + 406949929 = 4611^2 + 20173^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 170035 + ... + 172534.

Almost surely, 2^428211250 is an apocalyptic number.

428211250 is a deficient number, since it is larger than the sum of its proper divisors (374430260).

428211250 is an equidigital number, since it uses as much as digits as its factorization.

428211250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342591 (or 342576 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 428211250 is about 20693.2658128194. The cubic root of 428211250 is about 753.7361719349.

The spelling of 428211250 in words is "four hundred twenty-eight million, two hundred eleven thousand, two hundred fifty".