20413554 has 16 divisors (see below), whose sum is σ = 46659648. Its totient is φ = 5832432.

The previous prime is 20413537. The next prime is 20413559. The reversal of 20413554 is 45531402.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20413559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242977 + ... + 243060.

It is an arithmetic number, because the mean of its divisors is an integer number (2916228).

Almost surely, 2^20413554 is an apocalyptic number.

20413554 is an abundant number, since it is smaller than the sum of its proper divisors (26246094).

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

20413554 is a wasteful number, since it uses less digits than its factorization.

20413554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486049.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 20413554 is about 4518.1361201274. The cubic root of 20413554 is about 273.2999427121.

Adding to 20413554 its reverse (45531402), we get a palindrome (65944956).

The spelling of 20413554 in words is "twenty million, four hundred thirteen thousand, five hundred fifty-four".