1790420 has 12 divisors (see below), whose sum is σ = 3759924. Its totient is φ = 716160.

The previous prime is 1790419. The next prime is 1790443. The reversal of 1790420 is 240971.

It can be written as a sum of positive squares in 2 ways, for example, as 355216 + 1435204 = 596^2 + 1198^2 .

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, 44741 + ... + 44780.

It is an arithmetic number, because the mean of its divisors is an integer number (313327).

2^1790420 is an apocalyptic number.

1790420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1790420 is an abundant number, since it is smaller than the sum of its proper divisors (1969504).

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

1790420 is a wasteful number, since it uses less digits than its factorization.

1790420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89530 (or 89528 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 1790420 is about 1338.0657681893. The cubic root of 1790420 is about 121.4278503829.

The spelling of 1790420 in words is "one million, seven hundred ninety thousand, four hundred twenty".