8398820 has 24 divisors (see below), whose sum is σ = 17695104. Its totient is φ = 3348576.

The previous prime is 8398811. The next prime is 8398877. The reversal of 8398820 is 288938.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

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, 8807 + ... + 9713.

It is an arithmetic number, because the mean of its divisors is an integer number (737296).

Almost surely, 2^8398820 is an apocalyptic number.

It is an amenable number.

8398820 is an abundant number, since it is smaller than the sum of its proper divisors (9296284).

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

8398820 is a wasteful number, since it uses less digits than its factorization.

8398820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379 (or 1377 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 8398820 is about 2898.0717727482. The cubic root of 8398820 is about 203.2697522847.

The spelling of 8398820 in words is "eight million, three hundred ninety-eight thousand, eight hundred twenty".