20468356 has 6 divisors (see below), whose sum is σ = 35819630. Its totient is φ = 10234176.

The previous prime is 20468353. The next prime is 20468407. The reversal of 20468356 is 65386402.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19802500 + 665856 = 4450^2 + 816^2 .

It is not an unprimeable number, because it can be changed into a prime (20468353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2558541 + ... + 2558548.

Almost surely, 2^20468356 is an apocalyptic number.

It is an amenable number.

20468356 is a deficient number, since it is larger than the sum of its proper divisors (15351274).

20468356 is a wasteful number, since it uses less digits than its factorization.

20468356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5117093 (or 5117091 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 20468356 is about 4524.1967242816. The cubic root of 20468356 is about 273.5442901802.

The spelling of 20468356 in words is "twenty million, four hundred sixty-eight thousand, three hundred fifty-six".