1609072 has 40 divisors (see below), whose sum is σ = 3372800. Its totient is φ = 741312.

The previous prime is 1609063. The next prime is 1609079. The reversal of 1609072 is 2709061.

It is a super-2 number, since 2×1609072² = 5178225402368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1609079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20329 + ... + 20407.

It is an arithmetic number, because the mean of its divisors is an integer number (84320).

2^1609072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1609072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1686400).

1609072 is an abundant number, since it is smaller than the sum of its proper divisors (1763728).

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

1609072 is a wasteful number, since it uses less digits than its factorization.

1609072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 1609072 is about 1268.4920181065. The cubic root of 1609072 is about 117.1813487853.

The spelling of 1609072 in words is "one million, six hundred nine thousand, seventy-two".