20065960 has 32 divisors (see below), whose sum is σ = 45363240. Its totient is φ = 7988224.

The previous prime is 20065943. The next prime is 20065961. The reversal of 20065960 is 6956002.

20065960 = T₃₆₅₆ + T₃₆₅₇ + T₃₆₅₈.

It can be written as a sum of positive squares in 4 ways, for example, as 8191044 + 11874916 = 2862^2 + 3446^2 .

It is not an unprimeable number, because it can be changed into a prime (20065961) 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, 8244 + ... + 10396.

Almost surely, 2^20065960 is an apocalyptic number.

20065960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

20065960 is the 3658-th centered triangular number.

It is an amenable number.

20065960 is an abundant number, since it is smaller than the sum of its proper divisors (25297280).

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

20065960 is a wasteful number, since it uses less digits than its factorization.

20065960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397 (or 2393 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 20065960 is about 4479.5044368769. The cubic root of 20065960 is about 271.7398391893.

It can be divided in two parts, 20065 and 960, that added together give a square (21025 = 145²).

The spelling of 20065960 in words is "twenty million, sixty-five thousand, nine hundred sixty".