1375884720 has 360 divisors, whose sum is σ = 5474448720. Its totient is φ = 308689920.

The previous prime is 1375884659. The next prime is 1375884733. The reversal of 1375884720 is 274885731.

1375884720 is a `hidden beast` number, since 1 + 3 + 7 + 588 + 47 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2081190 + ... + 2081850.

It is an arithmetic number, because the mean of its divisors is an integer number (15206802).

Almost surely, 2^1375884720 is an apocalyptic number.

1375884720 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 1375884720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2737224360).

1375884720 is an abundant number, since it is smaller than the sum of its proper divisors (4098564000).

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

1375884720 is a wasteful number, since it uses less digits than its factorization.

1375884720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753 (or 737 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 1375884720 is about 37092.9200791741. The cubic root of 1375884720 is about 1112.2284910799.

The spelling of 1375884720 in words is "one billion, three hundred seventy-five million, eight hundred eighty-four thousand, seven hundred twenty".