105409380 has 24 divisors (see below), whose sum is σ = 295146432. Its totient is φ = 28109152.

The previous prime is 105409361. The next prime is 105409417. The reversal of 105409380 is 83904501.

It is a super-2 number, since 2×105409380² = 22222274783968800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 878352 + ... + 878471.

It is an arithmetic number, because the mean of its divisors is an integer number (12297768).

Almost surely, 2^105409380 is an apocalyptic number.

105409380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105409380 is an abundant number, since it is smaller than the sum of its proper divisors (189737052).

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

105409380 is a wasteful number, since it uses less digits than its factorization.

105409380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756835 (or 1756833 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 105409380 is about 10266.9070318183. The cubic root of 105409380 is about 472.3817234258.

The spelling of 105409380 in words is "one hundred five million, four hundred nine thousand, three hundred eighty".