44020400420 has 24 divisors (see below), whose sum is σ = 97308254400. Its totient is φ = 16681414752.

The previous prime is 44020400407. The next prime is 44020400507. The reversal of 44020400420 is 2400402044.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 44020400392 and 44020400401.

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, 57921200 + ... + 57921959.

It is an arithmetic number, because the mean of its divisors is an integer number (4054510600).

Almost surely, 2^44020400420 is an apocalyptic number.

It is an amenable number.

44020400420 is an abundant number, since it is smaller than the sum of its proper divisors (53287853980).

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

44020400420 is a wasteful number, since it uses less digits than its factorization.

44020400420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115843187 (or 115843185 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 44020400420 its reverse (2400402044), we get a palindrome (46420802464).

The spelling of 44020400420 in words is "forty-four billion, twenty million, four hundred thousand, four hundred twenty".