17428772 has 12 divisors (see below), whose sum is σ = 31244556. Its totient is φ = 8501760.

The previous prime is 17428771. The next prime is 17428783. The reversal of 17428772 is 27782471.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 256036 + 17172736 = 506^2 + 4144^2 .

It is not an unprimeable number, because it can be changed into a prime (17428771) 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, 52973 + ... + 53300.

It is an arithmetic number, because the mean of its divisors is an integer number (2603713).

Almost surely, 2^17428772 is an apocalyptic number.

It is an amenable number.

17428772 is a deficient number, since it is larger than the sum of its proper divisors (13815784).

17428772 is a wasteful number, since it uses less digits than its factorization.

17428772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106318 (or 106316 counting only the distinct ones).

The product of its digits is 43904, while the sum is 38.

The square root of 17428772 is about 4174.7780779342. The cubic root of 17428772 is about 259.2719870990.

The spelling of 17428772 in words is "seventeen million, four hundred twenty-eight thousand, seven hundred seventy-two".