20004462 has 32 divisors (see below), whose sum is σ = 45190560. Its totient is φ = 6557760.

The previous prime is 20004451. The next prime is 20004487. The reversal of 20004462 is 26440002.

20004462 is a `hidden beast` number, since 200 + 0 + 4 + 462 = 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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258 + ... + 6330.

It is an arithmetic number, because the mean of its divisors is an integer number (1412205).

Almost surely, 2^20004462 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20004462, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22595280).

20004462 is an abundant number, since it is smaller than the sum of its proper divisors (25186098).

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

20004462 is a wasteful number, since it uses less digits than its factorization.

20004462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6145 (or 6139 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 20004462 is about 4472.6347939442. The cubic root of 20004462 is about 271.4619463775.

Adding to 20004462 its reverse (26440002), we get a palindrome (46444464).

The spelling of 20004462 in words is "twenty million, four thousand, four hundred sixty-two".