20474544 has 20 divisors (see below), whose sum is σ = 52892696. Its totient is φ = 6824832.

The previous prime is 20474507. The next prime is 20474549. The reversal of 20474544 is 44547402.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20474549) 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, 213229 + ... + 213324.

Almost surely, 2^20474544 is an apocalyptic number.

20474544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20474544 is an abundant number, since it is smaller than the sum of its proper divisors (32418152).

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

20474544 is a wasteful number, since it uses less digits than its factorization.

20474544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426564 (or 426558 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 30.

The square root of 20474544 is about 4524.8805509096. The cubic root of 20474544 is about 273.5718534022.

The spelling of 20474544 in words is "twenty million, four hundred seventy-four thousand, five hundred forty-four".