2209572 has 48 divisors (see below), whose sum is σ = 5880000. Its totient is φ = 717120.

The previous prime is 2209549. The next prime is 2209579. The reversal of 2209572 is 2759022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2209579) 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, 4179 + ... + 4677.

It is an arithmetic number, because the mean of its divisors is an integer number (122500).

2^2209572 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 2209572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2940000).

2209572 is an abundant number, since it is smaller than the sum of its proper divisors (3670428).

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

2209572 is a wasteful number, since it uses less digits than its factorization.

2209572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553 (or 545 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 2209572 is about 1486.4629157836. The cubic root of 2209572 is about 130.2474969525.

The spelling of 2209572 in words is "two million, two hundred nine thousand, five hundred seventy-two".