2229724 has 12 divisors (see below), whose sum is σ = 4459504. Its totient is φ = 955584.

The previous prime is 2229713. The next prime is 2229767. The reversal of 2229724 is 4279222.

2229724 = T₃₈₅ + T₃₈₆ + ... + T₄₁₂.

2229724 = 21² + 22² + ... + 188².

2229724 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 79633 = 2229724 / (2 + 2 + 2 + 9 + 7 + 2 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 2229692 and 2229701.

It is a congruent number.

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, 39789 + ... + 39844.

2^2229724 is an apocalyptic number.

It is an amenable number.

2229724 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2229724 is a wasteful number, since it uses less digits than its factorization.

2229724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79644 (or 79642 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 2229724 is about 1493.2260378121. The cubic root of 2229724 is about 130.6422654467.

The spelling of 2229724 in words is "two million, two hundred twenty-nine thousand, seven hundred twenty-four".