1405860 has 24 divisors (see below), whose sum is σ = 3936576. Its totient is φ = 374880.

The previous prime is 1405841. The next prime is 1405879. The reversal of 1405860 is 685041.

It is an interprime number because it is at equal distance from previous prime (1405841) and next prime (1405879).

It is a self number, because there is not a number n which added to its sum of digits gives 1405860.

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 7 ways as a sum of consecutive naturals, for example, 11656 + ... + 11775.

It is an arithmetic number, because the mean of its divisors is an integer number (164024).

2^1405860 is an apocalyptic number.

1405860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1405860 is an abundant number, since it is smaller than the sum of its proper divisors (2530716).

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

1405860 is a wasteful number, since it uses less digits than its factorization.

1405860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23443 (or 23441 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1405860 is about 1185.6896727222. The cubic root of 1405860 is about 112.0247606820.

The spelling of 1405860 in words is "one million, four hundred five thousand, eight hundred sixty".