20533454 has 16 divisors (see below), whose sum is σ = 31980096.
Its totient is φ = 9880800.
The previous prime is 20533451. The next prime is 20533459. The reversal of 20533454 is 45433502.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20533451) 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, 3944 + ... + 7524.
It is an arithmetic number, because the mean of its divisors is an integer number (1998756).
Almost surely, 220533454 is an apocalyptic number.
20533454 is a deficient number, since it is larger than the sum of its proper divisors (11446642).
20533454 is a wasteful number, since it uses less digits than its factorization.
20533454 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3691.
The product of its (nonzero) digits is 7200, while the sum is 26.
The square root of 20533454 is about 4531.3854393552.
The cubic root of 20533454 is about 273.8339786693.
Adding to 20533454 its reverse (45433502), we get a palindrome (65966956).
The spelling of 20533454 in words is "twenty million, five hundred thirty-three thousand, four hundred fifty-four".