8152820 has 24 divisors (see below), whose sum is σ = 18438504. Its totient is φ = 3010176.

The previous prime is 8152819. The next prime is 8152883. The reversal of 8152820 is 282518.

It can be written as a sum of positive squares in 4 ways, for example, as 524176 + 7628644 = 724^2 + 2762^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 8152820.

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, 15419 + ... + 15938.

It is an arithmetic number, because the mean of its divisors is an integer number (768271).

Almost surely, 2^8152820 is an apocalyptic number.

It is an amenable number.

8152820 is an abundant number, since it is smaller than the sum of its proper divisors (10285684).

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

8152820 is a wasteful number, since it uses less digits than its factorization.

8152820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31379 (or 31377 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 8152820 is about 2855.3143434655. The cubic root of 8152820 is about 201.2654759648.

The spelling of 8152820 in words is "eight million, one hundred fifty-two thousand, eight hundred twenty".