13135890 has 32 divisors (see below), whose sum is σ = 31720896. Its totient is φ = 3481280.

The previous prime is 13135879. The next prime is 13135919. The reversal of 13135890 is 9853131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3925 + ... + 6455.

It is an arithmetic number, because the mean of its divisors is an integer number (991278).

Almost surely, 2^13135890 is an apocalyptic number.

13135890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13135890 is an abundant number, since it is smaller than the sum of its proper divisors (18585006).

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

13135890 is a wasteful number, since it uses less digits than its factorization.

13135890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2714.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 13135890 is about 3624.3468377075. The cubic root of 13135890 is about 235.9499199491.

The spelling of 13135890 in words is "thirteen million, one hundred thirty-five thousand, eight hundred ninety".