20375961 has 8 divisors (see below), whose sum is σ = 28597920. Its totient is φ = 12868992.

The previous prime is 20375947. The next prime is 20375963. The reversal of 20375961 is 16957302.

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

It is not a de Polignac number, because 20375961 - 2⁹ = 20375449 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20375963) 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, 178680 + ... + 178793.

It is an arithmetic number, because the mean of its divisors is an integer number (3574740).

Almost surely, 2^20375961 is an apocalyptic number.

It is an amenable number.

20375961 is a deficient number, since it is larger than the sum of its proper divisors (8221959).

20375961 is a wasteful number, since it uses less digits than its factorization.

20375961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357495.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 20375961 is about 4513.9739697965. The cubic root of 20375961 is about 273.1320725791.

The spelling of 20375961 in words is "twenty million, three hundred seventy-five thousand, nine hundred sixty-one".