20751950 has 12 divisors (see below), whose sum is σ = 38598720. Its totient is φ = 8300760.

The previous prime is 20751943. The next prime is 20751961. The reversal of 20751950 is 5915702.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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, 207470 + ... + 207569.

It is an arithmetic number, because the mean of its divisors is an integer number (3216560).

Almost surely, 2^20751950 is an apocalyptic number.

20751950 is a deficient number, since it is larger than the sum of its proper divisors (17846770).

20751950 is a wasteful number, since it uses less digits than its factorization.

20751950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415051 (or 415046 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 20751950 is about 4555.4308248507. The cubic root of 20751950 is about 274.8018407159.

The spelling of 20751950 in words is "twenty million, seven hundred fifty-one thousand, nine hundred fifty".