20468554 has 8 divisors (see below), whose sum is σ = 30743748. Its totient is φ = 10220640.

The previous prime is 20468549. The next prime is 20468557. The reversal of 20468554 is 45586402.

It can be written as a sum of positive squares in 2 ways, for example, as 20457529 + 11025 = 4523^2 + 105^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20468557) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4827 + ... + 8014.

Almost surely, 2^20468554 is an apocalyptic number.

20468554 is a deficient number, since it is larger than the sum of its proper divisors (10275194).

20468554 is a wasteful number, since it uses less digits than its factorization.

20468554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13640.

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 20468554 is about 4524.2186065662. The cubic root of 20468554 is about 273.5451722181.

The spelling of 20468554 in words is "twenty million, four hundred sixty-eight thousand, five hundred fifty-four".