20157361 has 8 divisors (see below), whose sum is σ = 24038784. Its totient is φ = 16526400.

The previous prime is 20157353. The next prime is 20157367. The reversal of 20157361 is 16375102.

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 20157361 - 2³ = 20157353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20157367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62440 + ... + 62761.

It is an arithmetic number, because the mean of its divisors is an integer number (3004848).

Almost surely, 2^20157361 is an apocalyptic number.

It is an amenable number.

20157361 is a deficient number, since it is larger than the sum of its proper divisors (3881423).

20157361 is a wasteful number, since it uses less digits than its factorization.

20157361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125231.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 20157361 is about 4489.6949785036. The cubic root of 20157361 is about 272.1518084591.

The spelling of 20157361 in words is "twenty million, one hundred fifty-seven thousand, three hundred sixty-one".