20440374 has 8 divisors (see below), whose sum is σ = 40880760. Its totient is φ = 6813456.

The previous prime is 20440369. The next prime is 20440379. The reversal of 20440374 is 47304402.

It is an interprime number because it is at equal distance from previous prime (20440369) and next prime (20440379).

It is a sphenic number, since it is the product of 3 distinct primes.

20440374 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20440379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1703359 + ... + 1703370.

It is an arithmetic number, because the mean of its divisors is an integer number (5110095).

Almost surely, 2^20440374 is an apocalyptic number.

20440374 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20440374 is a wasteful number, since it uses less digits than its factorization.

20440374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3406734.

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 20440374 is about 4521.1031839585. The cubic root of 20440374 is about 273.4195804899.

Adding to 20440374 its reverse (47304402), we get a palindrome (67744776).

The spelling of 20440374 in words is "twenty million, four hundred forty thousand, three hundred seventy-four".