1404430020 has 144 divisors (see below), whose sum is σ = 4919311488. Its totient is φ = 317675520.

The previous prime is 1404430019. The next prime is 1404430037. The reversal of 1404430020 is 200344041.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1404429975 and 1404430002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 116475 + ... + 127965.

Almost surely, 2^1404430020 is an apocalyptic number.

1404430020 is a gapful number since it is divisible by the number (10) 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 1404430020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2459655744).

1404430020 is an abundant number, since it is smaller than the sum of its proper divisors (3514881468).

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

1404430020 is a wasteful number, since it uses less digits than its factorization.

1404430020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11610 (or 11605 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1404430020 is about 37475.7257434729. The cubic root of 1404430020 is about 1119.8676554931.

Adding to 1404430020 its reverse (200344041), we get a palindrome (1604774061).

The spelling of 1404430020 in words is "one billion, four hundred four million, four hundred thirty thousand, twenty".