20416554 has 24 divisors (see below), whose sum is σ = 45072612. Its totient is φ = 6676800.

The previous prime is 20416549. The next prime is 20416597. The reversal of 20416554 is 45561402.

20416554 is a `hidden beast` number, since 2 + 0 + 4 + 1 + 655 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20385225 + 31329 = 4515^2 + 177^2 .

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 in 11 ways as a sum of consecutive naturals, for example, 9747 + ... + 11654.

Almost surely, 2^20416554 is an apocalyptic number.

20416554 is an abundant number, since it is smaller than the sum of its proper divisors (24656058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20416554 is a wasteful number, since it uses less digits than its factorization.

20416554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21462 (or 21459 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 20416554 is about 4518.4681032403. The cubic root of 20416554 is about 273.3133302170.

Adding to 20416554 its reverse (45561402), we get a palindrome (65977956).

The spelling of 20416554 in words is "twenty million, four hundred sixteen thousand, five hundred fifty-four".