20154196 has 12 divisors (see below), whose sum is σ = 36223348. Its totient is φ = 9804672.

The previous prime is 20154191. The next prime is 20154227. The reversal of 20154196 is 69145102.

It can be written as a sum of positive squares in 2 ways, for example, as 19536400 + 617796 = 4420^2 + 786^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20154191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67941 + ... + 68236.

Almost surely, 2^20154196 is an apocalyptic number.

It is an amenable number.

20154196 is a deficient number, since it is larger than the sum of its proper divisors (16069152).

20154196 is a wasteful number, since it uses less digits than its factorization.

20154196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136218 (or 136216 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 20154196 is about 4489.3424908332. The cubic root of 20154196 is about 272.1375637777.

Adding to 20154196 its reverse (69145102), we get a palindrome (89299298).

The spelling of 20154196 in words is "twenty million, one hundred fifty-four thousand, one hundred ninety-six".