20455396 has 12 divisors (see below), whose sum is σ = 38550652. Its totient is φ = 9440928.

The previous prime is 20455363. The next prime is 20455397. The reversal of 20455396 is 69355402.

It can be written as a sum of positive squares in 2 ways, for example, as 10758400 + 9696996 = 3280^2 + 3114^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20455397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196635 + ... + 196738.

Almost surely, 2^20455396 is an apocalyptic number.

20455396 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20455396 is a deficient number, since it is larger than the sum of its proper divisors (18095256).

20455396 is a wasteful number, since it uses less digits than its factorization.

20455396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393390 (or 393388 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 20455396 is about 4522.7641990270. The cubic root of 20455396 is about 273.4865444174.

The spelling of 20455396 in words is "twenty million, four hundred fifty-five thousand, three hundred ninety-six".