103861820 has 12 divisors (see below), whose sum is σ = 218109864. Its totient is φ = 41544720.

The previous prime is 103861819. The next prime is 103861829. The reversal of 103861820 is 28168301.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103861829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2596526 + ... + 2596565.

It is an arithmetic number, because the mean of its divisors is an integer number (18175822).

Almost surely, 2^103861820 is an apocalyptic number.

103861820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103861820 is an abundant number, since it is smaller than the sum of its proper divisors (114248044).

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

103861820 is a wasteful number, since it uses less digits than its factorization.

103861820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5193100 (or 5193098 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 103861820 is about 10191.2619434494. The cubic root of 103861820 is about 470.0585712429.

The spelling of 103861820 in words is "one hundred three million, eight hundred sixty-one thousand, eight hundred twenty".