1609426 has 32 divisors (see below), whose sum is σ = 3064320. Its totient is φ = 616896.

The previous prime is 1609423. The next prime is 1609457. The reversal of 1609426 is 6249061.

It is a junction number, because it is equal to n+sod(n) for n = 1609394 and 1609403.

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 15 ways as a sum of consecutive naturals, for example, 6615 + ... + 6853.

It is an arithmetic number, because the mean of its divisors is an integer number (95760).

2^1609426 is an apocalyptic number.

1609426 is the 1036-th pentagonal number.

1609426 is a deficient number, since it is larger than the sum of its proper divisors (1454894).

1609426 is a wasteful number, since it uses less digits than its factorization.

1609426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1609426 is about 1268.6315461946. The cubic root of 1609426 is about 117.1899415551.

The spelling of 1609426 in words is "one million, six hundred nine thousand, four hundred twenty-six".