105004428 has 12 divisors (see below), whose sum is σ = 245010360. Its totient is φ = 35001472.

The previous prime is 105004421. The next prime is 105004451. The reversal of 105004428 is 824400501.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×105004428² = 22051859799214368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105004398 and 105004407.

It is not an unprimeable number, because it can be changed into a prime (105004421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4375173 + ... + 4375196.

It is an arithmetic number, because the mean of its divisors is an integer number (20417530).

Almost surely, 2^105004428 is an apocalyptic number.

It is an amenable number.

105004428 is an abundant number, since it is smaller than the sum of its proper divisors (140005932).

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

105004428 is a wasteful number, since it uses less digits than its factorization.

105004428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8750376 (or 8750374 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 105004428 is about 10247.1668279579. The cubic root of 105004428 is about 471.7760296683.

Adding to 105004428 its reverse (824400501), we get a palindrome (929404929).

The spelling of 105004428 in words is "one hundred five million, four thousand, four hundred twenty-eight".