428212250 has 32 divisors (see below), whose sum is σ = 807985152. Its totient is φ = 169923600.

The previous prime is 428212243. The next prime is 428212283. The reversal of 428212250 is 52212824.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25007 + ... + 38493.

It is an arithmetic number, because the mean of its divisors is an integer number (25249536).

Almost surely, 2^428212250 is an apocalyptic number.

428212250 is a deficient number, since it is larger than the sum of its proper divisors (379772902).

428212250 is a wasteful number, since it uses less digits than its factorization.

428212250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13631 (or 13621 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 428212250 is about 20693.2899752553. The cubic root of 428212250 is about 753.7367586668.

The spelling of 428212250 in words is "four hundred twenty-eight million, two hundred twelve thousand, two hundred fifty".