8272820 has 24 divisors (see below), whose sum is σ = 17660328. Its totient is φ = 3254400.

The previous prime is 8272819. The next prime is 8272853. The reversal of 8272820 is 282728.

It can be written as a sum of positive squares in 4 ways, for example, as 1444 + 8271376 = 38^2 + 2876^2 .

It is a congruent number.

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, 2171 + ... + 4610.

It is an arithmetic number, because the mean of its divisors is an integer number (735847).

Almost surely, 2^8272820 is an apocalyptic number.

It is an amenable number.

8272820 is an abundant number, since it is smaller than the sum of its proper divisors (9387508).

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

8272820 is a wasteful number, since it uses less digits than its factorization.

8272820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6851 (or 6849 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 8272820 is about 2876.2510321597. The cubic root of 8272820 is about 202.2481347644.

The spelling of 8272820 in words is "eight million, two hundred seventy-two thousand, eight hundred twenty".