13020787 has 8 divisors (see below), whose sum is σ = 14349104. Its totient is φ = 11739168.

The previous prime is 13020779. The next prime is 13020803. The reversal of 13020787 is 78702031.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13020787 - 2³ = 13020779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13020727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11088 + ... + 12205.

It is an arithmetic number, because the mean of its divisors is an integer number (1793638).

Almost surely, 2^13020787 is an apocalyptic number.

13020787 is a deficient number, since it is larger than the sum of its proper divisors (1328317).

13020787 is a wasteful number, since it uses less digits than its factorization.

13020787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23349.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 13020787 is about 3608.4327622945. The cubic root of 13020787 is about 235.2587281714.

The spelling of 13020787 in words is "thirteen million, twenty thousand, seven hundred eighty-seven".