20062989 has 12 divisors (see below), whose sum is σ = 29034876. Its totient is φ = 13349952.

The previous prime is 20062979. The next prime is 20062997. The reversal of 20062989 is 98926002.

20062989 is a `hidden beast` number, since 20 + 0 + 629 + 8 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 189225 + 19873764 = 435^2 + 4458^2 .

It is not a de Polignac number, because 20062989 - 2⁵ = 20062957 is a prime.

It is a super-2 number, since 2×20062989² = 805047055228242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20062979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3747 + ... + 7359.

It is an arithmetic number, because the mean of its divisors is an integer number (2419573).

Almost surely, 2^20062989 is an apocalyptic number.

It is an amenable number.

20062989 is a deficient number, since it is larger than the sum of its proper divisors (8971887).

20062989 is a wasteful number, since it uses less digits than its factorization.

20062989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4236 (or 4233 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 20062989 is about 4479.1728030966. The cubic root of 20062989 is about 271.7264271072.

The spelling of 20062989 in words is "twenty million, sixty-two thousand, nine hundred eighty-nine".