20007344 has 40 divisors (see below), whose sum is σ = 45392928. Its totient is φ = 8363520.

The previous prime is 20007319. The next prime is 20007359. The reversal of 20007344 is 44370002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2414 + ... + 6770.

Almost surely, 2^20007344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20007344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22696464).

20007344 is an abundant number, since it is smaller than the sum of its proper divisors (25385584).

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

20007344 is a wasteful number, since it uses less digits than its factorization.

20007344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4413 (or 4407 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 20007344 is about 4472.9569637992. The cubic root of 20007344 is about 271.4749820653.

Adding to 20007344 its reverse (44370002), we get a palindrome (64377346).

The spelling of 20007344 in words is "twenty million, seven thousand, three hundred forty-four".