20071120 has 20 divisors (see below), whose sum is σ = 46665540. Its totient is φ = 8028416.

The previous prime is 20071109. The next prime is 20071141. The reversal of 20071120 is 2117002.

It can be written as a sum of positive squares in 2 ways, for example, as 3717184 + 16353936 = 1928^2 + 4044^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 20071120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125365 + ... + 125524.

It is an arithmetic number, because the mean of its divisors is an integer number (2333277).

Almost surely, 2^20071120 is an apocalyptic number.

20071120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20071120 is an abundant number, since it is smaller than the sum of its proper divisors (26594420).

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

20071120 is a wasteful number, since it uses less digits than its factorization.

20071120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250902 (or 250896 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 20071120 is about 4480.0803564222. The cubic root of 20071120 is about 271.7631299995.

Adding to 20071120 its reverse (2117002), we get a palindrome (22188122).

The spelling of 20071120 in words is "twenty million, seventy-one thousand, one hundred twenty".