428667250 has 64 divisors (see below), whose sum is σ = 884991744. Its totient is φ = 154176000.

The previous prime is 428667229. The next prime is 428667251. The reversal of 428667250 is 52766824.

It is a super-2 number, since 2×428667250² = 367511222445125000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (428667251) 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, 265947 + ... + 267553.

It is an arithmetic number, because the mean of its divisors is an integer number (13827996).

Almost surely, 2^428667250 is an apocalyptic number.

428667250 is an abundant number, since it is smaller than the sum of its proper divisors (456324494).

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

428667250 is a wasteful number, since it uses less digits than its factorization.

428667250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732 (or 1722 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 428667250 is about 20704.2809582946. The cubic root of 428667250 is about 754.0036269693.

The spelling of 428667250 in words is "four hundred twenty-eight million, six hundred sixty-seven thousand, two hundred fifty".