20012454 has 64 divisors (see below), whose sum is σ = 55457280. Its totient is φ = 5196960.

The previous prime is 20012441. The next prime is 20012479. The reversal of 20012454 is 45421002.

20012454 is a `hidden beast` number, since 200 + 12 + 454 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1752 + ... + 6564.

It is an arithmetic number, because the mean of its divisors is an integer number (866520).

Almost surely, 2^20012454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20012454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27728640).

20012454 is an abundant number, since it is smaller than the sum of its proper divisors (35444826).

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

20012454 is a wasteful number, since it uses less digits than its factorization.

20012454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4842 (or 4836 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 20012454 is about 4473.5281378348. The cubic root of 20012454 is about 271.4980922304.

Adding to 20012454 its reverse (45421002), we get a palindrome (65433456).

The spelling of 20012454 in words is "twenty million, twelve thousand, four hundred fifty-four".