428250 has 32 divisors (see below), whose sum is σ = 1070784. Its totient is φ = 114000.

The previous prime is 428249. The next prime is 428251. The reversal of 428250 is 52824.

428250 = T₁₂ + T₁₃ + ... + T₁₃₆.

It is an interprime number because it is at equal distance from previous prime (428249) and next prime (428251).

It is not an unprimeable number, because it can be changed into a prime (428251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 465 + ... + 1035.

It is an arithmetic number, because the mean of its divisors is an integer number (33462).

2⁴²⁸²⁵⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (535392).

428250 is an abundant number, since it is smaller than the sum of its proper divisors (642534).

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

428250 is a wasteful number, since it uses less digits than its factorization.

428250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591 (or 581 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 428250 is about 654.4081295339. The cubic root of 428250 is about 75.3758907128.

The spelling of 428250 in words is "four hundred twenty-eight thousand, two hundred fifty".