1560867840 has 352 divisors, whose sum is σ = 6343407360. Its totient is φ = 356548608.

The previous prime is 1560867821. The next prime is 1560867877. The reversal of 1560867840 is 487680651.

It is a happy number.

1560867840 is a `hidden beast` number, since 1 + 560 + 8 + 6 + 7 + 84 + 0 = 666.

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 (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 966874 + ... + 968486.

Almost surely, 2^1560867840 is an apocalyptic number.

1560867840 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 1560867840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3171703680).

1560867840 is an abundant number, since it is smaller than the sum of its proper divisors (4782539520).

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

1560867840 is a wasteful number, since it uses less digits than its factorization.

1560867840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654 (or 1630 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 1560867840 is about 39507.8199854155. The cubic root of 1560867840 is about 1159.9930241356.

The spelling of 1560867840 in words is "one billion, five hundred sixty million, eight hundred sixty-seven thousand, eight hundred forty".