20045376 has 84 divisors (see below), whose sum is σ = 61899292. Its totient is φ = 6165504.

The previous prime is 20045371. The next prime is 20045387. The reversal of 20045376 is 67354002.

It is a happy number.

20045376 is a `hidden beast` number, since 200 + 453 + 7 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1382976 + 18662400 = 1176^2 + 4320^2 .

It is not an unprimeable number, because it can be changed into a prime (20045371) 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 11 ways as a sum of consecutive naturals, for example, 6150 + ... + 8826.

Almost surely, 2^20045376 is an apocalyptic number.

20045376 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20045376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30949646).

20045376 is an abundant number, since it is smaller than the sum of its proper divisors (41853916).

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

20045376 is a wasteful number, since it uses less digits than its factorization.

20045376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2708 (or 2695 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 20045376 is about 4477.2062717726. The cubic root of 20045376 is about 271.6468889630.

Adding to 20045376 its reverse (67354002), we get a palindrome (87399378).

The spelling of 20045376 in words is "twenty million, forty-five thousand, three hundred seventy-six".