424400020344 has 160 divisors (see below), whose sum is σ = 1257214780800. Its totient is φ = 133385071680.

The previous prime is 424400020333. The next prime is 424400020361. The reversal of 424400020344 is 443020004424.

It is a happy number.

It is a super-2 number, since 2×424400020344² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2516149 + ... + 2679515.

It is an arithmetic number, because the mean of its divisors is an integer number (7857592380).

Almost surely, 2^424400020344 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 424400020344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (628607390400).

424400020344 is an abundant number, since it is smaller than the sum of its proper divisors (832814760456).

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

424400020344 is a wasteful number, since it uses less digits than its factorization.

424400020344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163615 (or 163602 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 424400020344 its reverse (443020004424), we get a palindrome (867420024768).

The spelling of 424400020344 in words is "four hundred twenty-four billion, four hundred million, twenty thousand, three hundred forty-four".