8220156 has 24 divisors (see below), whose sum is σ = 21920640. Its totient is φ = 2348592.

The previous prime is 8220143. The next prime is 8220169. The reversal of 8220156 is 6510228.

It is an interprime number because it is at equal distance from previous prime (8220143) and next prime (8220169).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48846 + ... + 49013.

It is an arithmetic number, because the mean of its divisors is an integer number (913360).

Almost surely, 2^8220156 is an apocalyptic number.

It is an amenable number.

8220156 is an abundant number, since it is smaller than the sum of its proper divisors (13700484).

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

8220156 is a wasteful number, since it uses less digits than its factorization.

8220156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97873 (or 97871 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 8220156 is about 2867.0814428614. The cubic root of 8220156 is about 201.8180566069.

The spelling of 8220156 in words is "eight million, two hundred twenty thousand, one hundred fifty-six".