1880406 has 24 divisors (see below), whose sum is σ = 4445064. Its totient is φ = 569760.

The previous prime is 1880401. The next prime is 1880413. The reversal of 1880406 is 6040881.

It is a self number, because there is not a number n which added to its sum of digits gives 1880406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1880401) 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 11 ways as a sum of consecutive naturals, for example, 4551 + ... + 4946.

It is an arithmetic number, because the mean of its divisors is an integer number (185211).

2^1880406 is an apocalyptic number.

1880406 is an abundant number, since it is smaller than the sum of its proper divisors (2564658).

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

1880406 is a wasteful number, since it uses less digits than its factorization.

1880406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9516 (or 9513 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 1880406 is about 1371.2789650542. The cubic root of 1880406 is about 123.4289997138.

The spelling of 1880406 in words is "one million, eight hundred eighty thousand, four hundred six".