20267901 has 12 divisors (see below), whose sum is σ = 30360512. Its totient is φ = 13511772.

The previous prime is 20267887. The next prime is 20267903. The reversal of 20267901 is 10976202.

It is not a de Polignac number, because 20267901 - 2⁵ = 20267869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20267903) 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, 41461 + ... + 41946.

Almost surely, 2^20267901 is an apocalyptic number.

It is an amenable number.

20267901 is a deficient number, since it is larger than the sum of its proper divisors (10092611).

20267901 is an frugal number, since it uses more digits than its factorization.

20267901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83422 (or 83410 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 20267901 is about 4501.9885606252. The cubic root of 20267901 is about 272.6483820000.

The spelling of 20267901 in words is "twenty million, two hundred sixty-seven thousand, nine hundred one".