20232356 has 6 divisors (see below), whose sum is σ = 35406630. Its totient is φ = 10116176.

The previous prime is 20232353. The next prime is 20232371. The reversal of 20232356 is 65323202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19360000 + 872356 = 4400^2 + 934^2 .

It is a super-3 number, since 3×20232356³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20232353) 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, 2529041 + ... + 2529048.

It is an arithmetic number, because the mean of its divisors is an integer number (5901105).

Almost surely, 2^20232356 is an apocalyptic number.

It is an amenable number.

20232356 is a deficient number, since it is larger than the sum of its proper divisors (15174274).

20232356 is a wasteful number, since it uses less digits than its factorization.

20232356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5058093 (or 5058091 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 20232356 is about 4498.0391283314. The cubic root of 20232356 is about 272.4889022779.

Adding to 20232356 its reverse (65323202), we get a palindrome (85555558).

The spelling of 20232356 in words is "twenty million, two hundred thirty-two thousand, three hundred fifty-six".