1404343680 has 128 divisors (see below), whose sum is σ = 4494528000. Its totient is φ = 372971520.

The previous prime is 1404343669. The next prime is 1404343687. The reversal of 1404343680 is 863434041.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1404343687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 518971 + ... + 521669.

It is an arithmetic number, because the mean of its divisors is an integer number (35113500).

Almost surely, 2^1404343680 is an apocalyptic number.

1404343680 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 1404343680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2247264000).

1404343680 is an abundant number, since it is smaller than the sum of its proper divisors (3090184320).

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

1404343680 is a wasteful number, since it uses less digits than its factorization.

1404343680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2992 (or 2980 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 1404343680 is about 37474.5737800979. The cubic root of 1404343680 is about 1119.8447063599.

The spelling of 1404343680 in words is "one billion, four hundred four million, three hundred forty-three thousand, six hundred eighty".