1440877680 has 480 divisors, whose sum is σ = 5640264000. Its totient is φ = 337582080.

The previous prime is 1440877657. The next prime is 1440877699. The reversal of 1440877680 is 867780441.

It is a super-2 number, since 2×1440877680² = 4152256977444364800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 9670246 + ... + 9670394.

It is an arithmetic number, because the mean of its divisors is an integer number (11750550).

Almost surely, 2^1440877680 is an apocalyptic number.

1440877680 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 1440877680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2820132000).

1440877680 is an abundant number, since it is smaller than the sum of its proper divisors (4199386320).

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

1440877680 is a wasteful number, since it uses less digits than its factorization.

1440877680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 1440877680 is about 37958.8946098276. The cubic root of 1440877680 is about 1129.4726126454.

The spelling of 1440877680 in words is "one billion, four hundred forty million, eight hundred seventy-seven thousand, six hundred eighty".