20512412 has 24 divisors (see below), whose sum is σ = 38102400. Its totient is φ = 9641456.

The previous prime is 20512411. The next prime is 20512433. The reversal of 20512412 is 21421502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20512411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3539 + ... + 7317.

It is an arithmetic number, because the mean of its divisors is an integer number (1587600).

Almost surely, 2^20512412 is an apocalyptic number.

It is an amenable number.

20512412 is a deficient number, since it is larger than the sum of its proper divisors (17589988).

20512412 is a wasteful number, since it uses less digits than its factorization.

20512412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3865 (or 3863 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 20512412 is about 4529.0630377596. The cubic root of 20512412 is about 273.7404080513.

Adding to 20512412 its reverse (21421502), we get a palindrome (41933914).

The spelling of 20512412 in words is "twenty million, five hundred twelve thousand, four hundred twelve".