236213028 has 72 divisors (see below), whose sum is σ = 638197560. Its totient is φ = 73405440.

The previous prime is 236212981. The next prime is 236213039. The reversal of 236213028 is 820312632.

236213028 is a `hidden beast` number, since 2 + 3 + 621 + 30 + 2 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 75481344 + 160731684 = 8688^2 + 12678^2 .

It is a junction number, because it is equal to n+sod(n) for n = 236212992 and 236213010.

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 23 ways as a sum of consecutive naturals, for example, 64938 + ... + 68478.

It is an arithmetic number, because the mean of its divisors is an integer number (8863855).

Almost surely, 2^236213028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 236213028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319098780).

236213028 is an abundant number, since it is smaller than the sum of its proper divisors (401984532).

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

236213028 is a wasteful number, since it uses less digits than its factorization.

236213028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3677 (or 3672 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 236213028 is about 15369.2234026316. The cubic root of 236213028 is about 618.1605452127.

The spelling of 236213028 in words is "two hundred thirty-six million, two hundred thirteen thousand, twenty-eight".