13017890 has 16 divisors (see below), whose sum is σ = 23666040. Its totient is φ = 5155200.

The previous prime is 13017889. The next prime is 13017929. The reversal of 13017890 is 9871031.

It can be written as a sum of positive squares in 4 ways, for example, as 12909649 + 108241 = 3593^2 + 329^2 .

It is a plaindrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5435 + ... + 7454.

Almost surely, 2^13017890 is an apocalyptic number.

13017890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13017890 is a deficient number, since it is larger than the sum of its proper divisors (10648150).

13017890 is a wasteful number, since it uses less digits than its factorization.

13017890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12997.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 13017890 is about 3608.0313191545. The cubic root of 13017890 is about 235.2412792750.

The spelling of 13017890 in words is "thirteen million, seventeen thousand, eight hundred ninety".