13157706 has 16 divisors (see below), whose sum is σ = 27223200. Its totient is φ = 4234608.

The previous prime is 13157701. The next prime is 13157723. The reversal of 13157706 is 60775131.

It is a super-5 number, since 5×13157706⁵ (a number of 37 digits) contains 55555 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13157701) 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, 37636 + ... + 37983.

It is an arithmetic number, because the mean of its divisors is an integer number (1701450).

Almost surely, 2^13157706 is an apocalyptic number.

13157706 is an abundant number, since it is smaller than the sum of its proper divisors (14065494).

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

13157706 is a wasteful number, since it uses less digits than its factorization.

13157706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75653.

The product of its (nonzero) digits is 4410, while the sum is 30.

The square root of 13157706 is about 3627.3552348784. The cubic root of 13157706 is about 236.0804690641.

The spelling of 13157706 in words is "thirteen million, one hundred fifty-seven thousand, seven hundred six".