1404990720 has 648 divisors, whose sum is σ = 5997831840. Its totient is φ = 301916160.

The previous prime is 1404990703. The next prime is 1404990731. The reversal of 1404990720 is 270994041.

1404990720 is a `hidden beast` number, since 140 + 499 + 0 + 7 + 20 = 666.

It is a super-2 number, since 2×1404990720² = 3947997846572236800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10725055 + ... + 10725185.

Almost surely, 2^1404990720 is an apocalyptic number.

1404990720 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 1404990720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2998915920).

1404990720 is an abundant number, since it is smaller than the sum of its proper divisors (4592841120).

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

1404990720 is a wasteful number, since it uses less digits than its factorization.

1404990720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 1404990720 is about 37483.2058394156. The cubic root of 1404990720 is about 1120.0166664187.

The spelling of 1404990720 in words is "one billion, four hundred four million, nine hundred ninety thousand, seven hundred twenty".