20512332 has 24 divisors (see below), whose sum is σ = 53180400. Its totient is φ = 6837408.

The previous prime is 20512321. The next prime is 20512337. The reversal of 20512332 is 23321502.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20512337) 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, 94857 + ... + 95072.

It is an arithmetic number, because the mean of its divisors is an integer number (2215850).

Almost surely, 2^20512332 is an apocalyptic number.

It is an amenable number.

20512332 is an abundant number, since it is smaller than the sum of its proper divisors (32668068).

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

20512332 is a wasteful number, since it uses less digits than its factorization.

20512332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189942 (or 189934 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 20512332 is about 4529.0542059022. The cubic root of 20512332 is about 273.7400521812.

Adding to 20512332 its reverse (23321502), we get a palindrome (43833834).

The spelling of 20512332 in words is "twenty million, five hundred twelve thousand, three hundred thirty-two".