23782212 has 18 divisors (see below), whose sum is σ = 60116238. Its totient is φ = 7927392.

The previous prime is 23782193. The next prime is 23782217. The reversal of 23782212 is 21228732.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13439556 + 10342656 = 3666^2 + 3216^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×23782212² = 1131187215225888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23782217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 330273 + ... + 330344.

It is an arithmetic number, because the mean of its divisors is an integer number (3339791).

Almost surely, 2^23782212 is an apocalyptic number.

It is an amenable number.

23782212 is an abundant number, since it is smaller than the sum of its proper divisors (36334026).

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

23782212 is a wasteful number, since it uses less digits than its factorization.

23782212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660627 (or 660622 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 23782212 is about 4876.7009340332. The cubic root of 23782212 is about 287.5747485540.

The spelling of 23782212 in words is "twenty-three million, seven hundred eighty-two thousand, two hundred twelve".