17128890 has 24 divisors (see below), whose sum is σ = 44535348. Its totient is φ = 4567680.

The previous prime is 17128883. The next prime is 17128897. The reversal of 17128890 is 9882171.

It is an interprime number because it is at equal distance from previous prime (17128883) and next prime (17128897).

It can be written as a sum of positive squares in 2 ways, for example, as 15752961 + 1375929 = 3969^2 + 1173^2 .

It is not an unprimeable number, because it can be changed into a prime (17128897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95071 + ... + 95250.

Almost surely, 2^17128890 is an apocalyptic number.

17128890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

17128890 is an abundant number, since it is smaller than the sum of its proper divisors (27406458).

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

17128890 is a wasteful number, since it uses less digits than its factorization.

17128890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190334 (or 190331 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 17128890 is about 4138.7063196124. The cubic root of 17128890 is about 257.7763520669.

The spelling of 17128890 in words is "seventeen million, one hundred twenty-eight thousand, eight hundred ninety".