2250729 has 12 divisors (see below), whose sum is σ = 3501316. Its totient is φ = 1384992.

The previous prime is 2250713. The next prime is 2250761. The reversal of 2250729 is 9270522.

It is a happy number.

2250729 is nontrivially palindromic in base 12.

It can be written as a sum of positive squares in 2 ways, for example, as 304704 + 1946025 = 552^2 + 1395^2 .

It is not a de Polignac number, because 2250729 - 2⁴ = 2250713 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2250709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9502 + ... + 9735.

2^2250729 is an apocalyptic number.

It is an amenable number.

2250729 is a deficient number, since it is larger than the sum of its proper divisors (1250587).

2250729 is a wasteful number, since it uses less digits than its factorization.

2250729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19256 (or 19253 counting only the distinct ones).

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

The square root of 2250729 is about 1500.2429803202. The cubic root of 2250729 is about 131.0512201858.

The spelling of 2250729 in words is "two million, two hundred fifty thousand, seven hundred twenty-nine".