2279428 has 12 divisors (see below), whose sum is σ = 4223772. Its totient is φ = 1072640.

The previous prime is 2279423. The next prime is 2279447. The reversal of 2279428 is 8249722.

It can be written as a sum of positive squares in 2 ways, for example, as 1214404 + 1065024 = 1102^2 + 1032^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 2279393 and 2279402.

It is not an unprimeable number, because it can be changed into a prime (2279423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16693 + ... + 16828.

It is an arithmetic number, because the mean of its divisors is an integer number (351981).

2^2279428 is an apocalyptic number.

It is an amenable number.

2279428 is a deficient number, since it is larger than the sum of its proper divisors (1944344).

2279428 is a wasteful number, since it uses less digits than its factorization.

2279428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33542 (or 33540 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 2279428 is about 1509.7774670461. Note that the first 3 decimals coincide. The cubic root of 2279428 is about 131.6058798259.

It can be divided in two parts, 22794 and 28, that added together give a palindrome (22822).

The spelling of 2279428 in words is "two million, two hundred seventy-nine thousand, four hundred twenty-eight".