20291104 has 12 divisors (see below), whose sum is σ = 39948174. Its totient is φ = 10145536.

The previous prime is 20291087. The next prime is 20291119. The reversal of 20291104 is 40119202.

It can be written as a sum of positive squares in only one way, i.e., 19184400 + 1106704 = 4380^2 + 1052^2 .

It is an unprimeable number.

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, 317017 + ... + 317080.

Almost surely, 2^20291104 is an apocalyptic number.

It is an amenable number.

20291104 is a deficient number, since it is larger than the sum of its proper divisors (19657070).

20291104 is an equidigital number, since it uses as much as digits as its factorization.

20291104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634107 (or 634099 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 20291104 is about 4504.5647958488. The cubic root of 20291104 is about 272.7523863204.

The spelling of 20291104 in words is "twenty million, two hundred ninety-one thousand, one hundred four".