20452312 has 16 divisors (see below), whose sum is σ = 39585600. Its totient is φ = 9896160.

The previous prime is 20452307. The next prime is 20452357. The reversal of 20452312 is 21325402.

It is a super-2 number, since 2×20452312² = 836594132290688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20452312.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 40987 + ... + 41482.

It is an arithmetic number, because the mean of its divisors is an integer number (2474100).

Almost surely, 2^20452312 is an apocalyptic number.

It is an amenable number.

20452312 is a deficient number, since it is larger than the sum of its proper divisors (19133288).

20452312 is a wasteful number, since it uses less digits than its factorization.

20452312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82506 (or 82502 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20452312 is about 4522.4232442353. The cubic root of 20452312 is about 273.4727994722.

Adding to 20452312 its reverse (21325402), we get a palindrome (41777714).

The spelling of 20452312 in words is "twenty million, four hundred fifty-two thousand, three hundred twelve".