2809472 has 32 divisors (see below), whose sum is σ = 5728320. Its totient is φ = 1371904.

The previous prime is 2809453. The next prime is 2809483. The reversal of 2809472 is 2749082.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5783 + ... + 6249.

It is an arithmetic number, because the mean of its divisors is an integer number (179010).

2^2809472 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 2809472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2864160).

2809472 is an abundant number, since it is smaller than the sum of its proper divisors (2918848).

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

2809472 is an equidigital number, since it uses as much as digits as its factorization.

2809472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 2809472 is about 1676.1479648289. The cubic root of 2809472 is about 141.1047291268.

The spelling of 2809472 in words is "two million, eight hundred nine thousand, four hundred seventy-two".