103821864 has 32 divisors (see below), whose sum is σ = 259818720. Its totient is φ = 34572096.

The previous prime is 103821863. The next prime is 103821869. The reversal of 103821864 is 468128301.

It is not an unprimeable number, because it can be changed into a prime (103821863) 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, 34134 + ... + 37050.

It is an arithmetic number, because the mean of its divisors is an integer number (8119335).

Almost surely, 2^103821864 is an apocalyptic number.

It is an amenable number.

103821864 is an abundant number, since it is smaller than the sum of its proper divisors (155996856).

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

103821864 is a wasteful number, since it uses less digits than its factorization.

103821864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4409 (or 4405 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 103821864 is about 10189.3014480876. The cubic root of 103821864 is about 469.9982857943.

It can be divided in two parts, 10382 and 1864, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 103821864 in words is "one hundred three million, eight hundred twenty-one thousand, eight hundred sixty-four".