105394820 has 24 divisors (see below), whose sum is σ = 221736984. Its totient is φ = 42080256.

The previous prime is 105394799. The next prime is 105394831. The reversal of 105394820 is 28493501.

It can be written as a sum of positive squares in 4 ways, for example, as 57729604 + 47665216 = 7598^2 + 6904^2 .

It is a super-2 number, since 2×105394820² = 22216136165664800, which contains 22 as substring.

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, 6974 + ... + 16106.

It is an arithmetic number, because the mean of its divisors is an integer number (9239041).

Almost surely, 2^105394820 is an apocalyptic number.

105394820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105394820 is an abundant number, since it is smaller than the sum of its proper divisors (116342164).

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

105394820 is a wasteful number, since it uses less digits than its factorization.

105394820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9719 (or 9717 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 105394820 is about 10266.1979330227. The cubic root of 105394820 is about 472.3599726904.

The spelling of 105394820 in words is "one hundred five million, three hundred ninety-four thousand, eight hundred twenty".