20951092 has 12 divisors (see below), whose sum is σ = 36945216. Its totient is φ = 10395320.

The previous prime is 20951087. The next prime is 20951107. The reversal of 20951092 is 29015902.

It is a self number, because there is not a number n which added to its sum of digits gives 20951092.

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 3 ways as a sum of consecutive naturals, for example, 19468 + ... + 20515.

It is an arithmetic number, because the mean of its divisors is an integer number (3078768).

Almost surely, 2^20951092 is an apocalyptic number.

It is an amenable number.

20951092 is a deficient number, since it is larger than the sum of its proper divisors (15994124).

20951092 is a wasteful number, since it uses less digits than its factorization.

20951092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40118 (or 40116 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 20951092 is about 4577.2362840474. The cubic root of 20951092 is about 275.6780710499.

Adding to 20951092 its reverse (29015902), we get a palindrome (49966994).

The spelling of 20951092 in words is "twenty million, nine hundred fifty-one thousand, ninety-two".