20751882 has 16 divisors (see below), whose sum is σ = 41601600. Its totient is φ = 6900992.

The previous prime is 20751881. The next prime is 20751923. The reversal of 20751882 is 28815702.

It is not an unprimeable number, because it can be changed into a prime (20751881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1158 + ... + 6545.

It is an arithmetic number, because the mean of its divisors is an integer number (2600100).

Almost surely, 2^20751882 is an apocalyptic number.

20751882 is an abundant number, since it is smaller than the sum of its proper divisors (20849718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20751882 is a wasteful number, since it uses less digits than its factorization.

20751882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8157.

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 20751882 is about 4555.4233612256. The cubic root of 20751882 is about 274.8015405586.

The spelling of 20751882 in words is "twenty million, seven hundred fifty-one thousand, eight hundred eighty-two".