428163250 has 64 divisors (see below), whose sum is σ = 841557600. Its totient is φ = 162892800.

The previous prime is 428163217. The next prime is 428163259. The reversal of 428163250 is 52361824.

It can be written as a sum of positive squares in 16 ways, for example, as 1038361 + 427124889 = 1019^2 + 20667^2 .

It is not an unprimeable number, because it can be changed into a prime (428163259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 528846 + ... + 529654.

Almost surely, 2^428163250 is an apocalyptic number.

428163250 is a deficient number, since it is larger than the sum of its proper divisors (413394350).

428163250 is a wasteful number, since it uses less digits than its factorization.

428163250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928 (or 918 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 428163250 is about 20692.1059827172. The cubic root of 428163250 is about 753.7080077300.

The spelling of 428163250 in words is "four hundred twenty-eight million, one hundred sixty-three thousand, two hundred fifty".