20761371 has 12 divisors (see below), whose sum is σ = 30351048. Its totient is φ = 13673664.

The previous prime is 20761343. The next prime is 20761373. The reversal of 20761371 is 17316702.

It is not a de Polignac number, because 20761371 - 2¹⁰ = 20760347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20761373) 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, 13150 + ... + 14643.

It is an arithmetic number, because the mean of its divisors is an integer number (2529254).

Almost surely, 2^20761371 is an apocalyptic number.

20761371 is a deficient number, since it is larger than the sum of its proper divisors (9589677).

20761371 is a wasteful number, since it uses less digits than its factorization.

20761371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27882 (or 27879 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 20761371 is about 4556.4647480256. The cubic root of 20761371 is about 274.8434194024.

The spelling of 20761371 in words is "twenty million, seven hundred sixty-one thousand, three hundred seventy-one".