1807420 has 12 divisors (see below), whose sum is σ = 3795624. Its totient is φ = 722960.

The previous prime is 1807397. The next prime is 1807439. The reversal of 1807420 is 247081.

It is a junction number, because it is equal to n+sod(n) for n = 1807391 and 1807400.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 45166 + ... + 45205.

It is an arithmetic number, because the mean of its divisors is an integer number (316302).

2^1807420 is an apocalyptic number.

1807420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1807420 is an abundant number, since it is smaller than the sum of its proper divisors (1988204).

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

1807420 is a wasteful number, since it uses less digits than its factorization.

1807420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90380 (or 90378 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 1807420 is about 1344.4032133255. The cubic root of 1807420 is about 121.8109586839.

The spelling of 1807420 in words is "one million, eight hundred seven thousand, four hundred twenty".