1405880 has 32 divisors (see below), whose sum is σ = 3615840. Its totient is φ = 481920.

The previous prime is 1405879. The next prime is 1405919. The reversal of 1405880 is 885041.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 2231 + ... + 2790.

It is an arithmetic number, because the mean of its divisors is an integer number (112995).

2^1405880 is an apocalyptic number.

1405880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1405880 is an abundant number, since it is smaller than the sum of its proper divisors (2209960).

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

1405880 is a wasteful number, since it uses less digits than its factorization.

1405880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5039 (or 5035 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 1405880 is about 1185.6981066022. The cubic root of 1405880 is about 112.0252919072.

The spelling of 1405880 in words is "one million, four hundred five thousand, eight hundred eighty".