8250220 has 24 divisors (see below), whose sum is σ = 18901008. Its totient is φ = 3000000.

The previous prime is 8250191. The next prime is 8250251. The reversal of 8250220 is 220528.

8250220 = T₃₃₁ + T₃₃₂ + ... + T₄₄₀.

It is a super-2 number, since 2×8250220² = 136132260096800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18531 + ... + 18970.

It is an arithmetic number, because the mean of its divisors is an integer number (787542).

Almost surely, 2^8250220 is an apocalyptic number.

It is an amenable number.

8250220 is an abundant number, since it is smaller than the sum of its proper divisors (10650788).

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

8250220 is a wasteful number, since it uses less digits than its factorization.

8250220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37521 (or 37519 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 8250220 is about 2872.3196200980. The cubic root of 8250220 is about 202.0637971218.

Adding to 8250220 its reverse (220528), we get a palindrome (8470748).

The spelling of 8250220 in words is "eight million, two hundred fifty thousand, two hundred twenty".