105247720 has 32 divisors (see below), whose sum is σ = 237323520. Its totient is φ = 42007360.

The previous prime is 105247693. The next prime is 105247777. The reversal of 105247720 is 27742501.

It is a super-2 number, since 2×105247720² = 22154165130396800, 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, 17505 + ... + 22735.

It is an arithmetic number, because the mean of its divisors is an integer number (7416360).

Almost surely, 2^105247720 is an apocalyptic number.

105247720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105247720 is an abundant number, since it is smaller than the sum of its proper divisors (132075800).

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

105247720 is a wasteful number, since it uses less digits than its factorization.

105247720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5745 (or 5741 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 105247720 is about 10259.0311433390. The cubic root of 105247720 is about 472.1401120954.

The spelling of 105247720 in words is "one hundred five million, two hundred forty-seven thousand, seven hundred twenty".