105287232 has 28 divisors (see below), whose sum is σ = 278572976. Its totient is φ = 35095680.

The previous prime is 105287219. The next prime is 105287233. The reversal of 105287232 is 232782501.

It is a super-2 number, since 2×105287232² = 22170802444443648, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105287232.

It is not an unprimeable number, because it can be changed into a prime (105287233) 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, 273994 + ... + 274377.

Almost surely, 2^105287232 is an apocalyptic number.

105287232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

105287232 is an abundant number, since it is smaller than the sum of its proper divisors (173285744).

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

105287232 is an equidigital number, since it uses as much as digits as its factorization.

105287232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548386 (or 548376 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 105287232 is about 10260.9566805440. The cubic root of 105287232 is about 472.1991881688.

The spelling of 105287232 in words is "one hundred five million, two hundred eighty-seven thousand, two hundred thirty-two".