8363820 has 24 divisors (see below), whose sum is σ = 23418864. Its totient is φ = 2230336.

The previous prime is 8363807. The next prime is 8363821. The reversal of 8363820 is 283638.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (8363821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69639 + ... + 69758.

It is an arithmetic number, because the mean of its divisors is an integer number (975786).

Almost surely, 2^8363820 is an apocalyptic number.

It is an amenable number.

8363820 is an abundant number, since it is smaller than the sum of its proper divisors (15055044).

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

8363820 is a wasteful number, since it uses less digits than its factorization.

8363820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139409 (or 139407 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 8363820 is about 2892.0269708286. The cubic root of 8363820 is about 202.9870003890.

It can be divided in two parts, 836 and 3820, that added together give a triangular number (4656 = T₉₆).

The spelling of 8363820 in words is "eight million, three hundred sixty-three thousand, eight hundred twenty".