20271950 has 12 divisors (see below), whose sum is σ = 37705920. Its totient is φ = 8108760.

The previous prime is 20271949. The next prime is 20271959. The reversal of 20271950 is 5917202.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20271959) 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 5 ways as a sum of consecutive naturals, for example, 202670 + ... + 202769.

It is an arithmetic number, because the mean of its divisors is an integer number (3142160).

Almost surely, 2^20271950 is an apocalyptic number.

20271950 is a deficient number, since it is larger than the sum of its proper divisors (17433970).

20271950 is a wasteful number, since it uses less digits than its factorization.

20271950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405451 (or 405446 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 20271950 is about 4502.4382283381. The cubic root of 20271950 is about 272.6665368119. Note that the first 3 decimals are identical.

The spelling of 20271950 in words is "twenty million, two hundred seventy-one thousand, nine hundred fifty".