105780492 has 60 divisors (see below), whose sum is σ = 283311336. Its totient is φ = 34395840.

The previous prime is 105780469. The next prime is 105780497. The reversal of 105780492 is 294087501.

It is a super-2 number, since 2×105780492² = 22379024975524128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (105780497) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 9303 + ... + 17265.

Almost surely, 2^105780492 is an apocalyptic number.

105780492 is a gapful number since it is divisible by the number (12) 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 105780492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141655668).

105780492 is an abundant number, since it is smaller than the sum of its proper divisors (177530844).

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

105780492 is a wasteful number, since it uses less digits than its factorization.

105780492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8020 (or 8009 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 105780492 is about 10284.9643655192. The cubic root of 105780492 is about 472.9354413690.

The spelling of 105780492 in words is "one hundred five million, seven hundred eighty thousand, four hundred ninety-two".