20212328 has 8 divisors (see below), whose sum is σ = 37898130. Its totient is φ = 10106160.

The previous prime is 20212327. The next prime is 20212373. The reversal of 20212328 is 82321202.

It can be written as a sum of positive squares in only one way, i.e., 18679684 + 1532644 = 4322^2 + 1238^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (20212327) 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 as a sum of consecutive naturals, namely, 1263263 + ... + 1263278.

Almost surely, 2^20212328 is an apocalyptic number.

It is an amenable number.

20212328 is a deficient number, since it is larger than the sum of its proper divisors (17685802).

20212328 is a wasteful number, since it uses less digits than its factorization.

20212328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2526547 (or 2526543 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 20212328 is about 4495.8122736609. The cubic root of 20212328 is about 272.3989603801.

The spelling of 20212328 in words is "twenty million, two hundred twelve thousand, three hundred twenty-eight".