13345890 has 16 divisors (see below), whose sum is σ = 32030208. Its totient is φ = 3558896.

The previous prime is 13345889. The next prime is 13345987. The reversal of 13345890 is 9854331.

It is a super-2 number, since 2×13345890² = 356225559784200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222402 + ... + 222461.

It is an arithmetic number, because the mean of its divisors is an integer number (2001888).

Almost surely, 2^13345890 is an apocalyptic number.

13345890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13345890 is an abundant number, since it is smaller than the sum of its proper divisors (18684318).

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

13345890 is a wasteful number, since it uses less digits than its factorization.

13345890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444873.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 13345890 is about 3653.2027044773. The cubic root of 13345890 is about 237.2006348169.

The spelling of 13345890 in words is "thirteen million, three hundred forty-five thousand, eight hundred ninety".