20201279 has 12 divisors (see below), whose sum is σ = 23725224. Its totient is φ = 17149104.

The previous prime is 20201273. The next prime is 20201303. The reversal of 20201279 is 97210202.

It is not a de Polignac number, because 20201279 - 2¹² = 20197183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3317 + ... + 7169.

It is an arithmetic number, because the mean of its divisors is an integer number (1977102).

Almost surely, 2^20201279 is an apocalyptic number.

20201279 is a deficient number, since it is larger than the sum of its proper divisors (3523945).

20201279 is a wasteful number, since it uses less digits than its factorization.

20201279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3974 (or 3967 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 20201279 is about 4494.5832954791. The cubic root of 20201279 is about 272.3493160129.

The spelling of 20201279 in words is "twenty million, two hundred one thousand, two hundred seventy-nine".