1609420 has 12 divisors (see below), whose sum is σ = 3379824. Its totient is φ = 643760.

The previous prime is 1609417. The next prime is 1609423. The reversal of 1609420 is 249061.

It is an interprime number because it is at equal distance from previous prime (1609417) and next prime (1609423).

It is a junction number, because it is equal to n+sod(n) for n = 1609391 and 1609400.

It is not an unprimeable number, because it can be changed into a prime (1609423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40216 + ... + 40255.

It is an arithmetic number, because the mean of its divisors is an integer number (281652).

2^1609420 is an apocalyptic number.

1609420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1609420 is an abundant number, since it is smaller than the sum of its proper divisors (1770404).

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

1609420 is a wasteful number, since it uses less digits than its factorization.

1609420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80480 (or 80478 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1609420 is about 1268.6291814396. The cubic root of 1609420 is about 117.1897959254.

The spelling of 1609420 in words is "one million, six hundred nine thousand, four hundred twenty".