4250820 has 96 divisors (see below), whose sum is σ = 14112000. Its totient is φ = 935424.

The previous prime is 4250809. The next prime is 4250843. The reversal of 4250820 is 280524.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12006 + ... + 12354.

It is an arithmetic number, because the mean of its divisors is an integer number (147000).

Almost surely, 2^4250820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4250820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7056000).

4250820 is an abundant number, since it is smaller than the sum of its proper divisors (9861180).

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

4250820 is a wasteful number, since it uses less digits than its factorization.

4250820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397 (or 395 counting only the distinct ones).

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

The square root of 4250820 is about 2061.7516824293. The cubic root of 4250820 is about 161.9910069692.

The spelling of 4250820 in words is "four million, two hundred fifty thousand, eight hundred twenty".