105406250 has 28 divisors (see below), whose sum is σ = 197692782. Its totient is φ = 42150000.

The previous prime is 105406247. The next prime is 105406261. The reversal of 105406250 is 52604501.

It can be written as a sum of positive squares in 7 ways, for example, as 22250089 + 83156161 = 4717^2 + 9119^2 .

It is a super-2 number, since 2×105406250² = 22220955078125000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 13 ways as a sum of consecutive naturals, for example, 29564 + ... + 32936.

Almost surely, 2^105406250 is an apocalyptic number.

105406250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105406250 is a deficient number, since it is larger than the sum of its proper divisors (92286532).

105406250 is an frugal number, since it uses more digits than its factorization.

105406250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3405 (or 3380 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 105406250 is about 10266.7545991905. The cubic root of 105406250 is about 472.3770477843.

The spelling of 105406250 in words is "one hundred five million, four hundred six thousand, two hundred fifty".