105272520 has 64 divisors (see below), whose sum is σ = 321192000. Its totient is φ = 27595008.

The previous prime is 105272509. The next prime is 105272537. The reversal of 105272520 is 25272501.

It is a super-2 number, since 2×105272520² = 22164606934300800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355 + ... + 14514.

It is an arithmetic number, because the mean of its divisors is an integer number (5018625).

Almost surely, 2^105272520 is an apocalyptic number.

105272520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 105272520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160596000).

105272520 is an abundant number, since it is smaller than the sum of its proper divisors (215919480).

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

105272520 is a wasteful number, since it uses less digits than its factorization.

105272520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14942 (or 14938 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 105272520 is about 10260.2397632804. The cubic root of 105272520 is about 472.1771933586.

The spelling of 105272520 in words is "one hundred five million, two hundred seventy-two thousand, five hundred twenty".