17420828 has 6 divisors (see below), whose sum is σ = 30486456. Its totient is φ = 8710412.

The previous prime is 17420827. The next prime is 17420831. The reversal of 17420828 is 82802471.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 17420794 and 17420803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17420827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2177600 + ... + 2177607.

It is an arithmetic number, because the mean of its divisors is an integer number (5081076).

Almost surely, 2^17420828 is an apocalyptic number.

It is an amenable number.

17420828 is a deficient number, since it is larger than the sum of its proper divisors (13065628).

17420828 is a wasteful number, since it uses less digits than its factorization.

17420828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4355211 (or 4355209 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 17420828 is about 4173.8265416761. The cubic root of 17420828 is about 259.2325892253.

The spelling of 17420828 in words is "seventeen million, four hundred twenty thousand, eight hundred twenty-eight".