1560256140 has 48 divisors (see below), whose sum is σ = 4370913792. Its totient is φ = 415859136.

The previous prime is 1560256127. The next prime is 1560256157. The reversal of 1560256140 is 416520651.

1560256140 = 6226² + 6227² + ... + 6265².

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1560256098 and 1560256107.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141507 + ... + 152133.

It is an arithmetic number, because the mean of its divisors is an integer number (91060704).

Almost surely, 2^1560256140 is an apocalyptic number.

1560256140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1560256140 is an abundant number, since it is smaller than the sum of its proper divisors (2810657652).

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

1560256140 is a wasteful number, since it uses less digits than its factorization.

1560256140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13086 (or 13084 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 1560256140 is about 39500.0777214425. The cubic root of 1560256140 is about 1159.8414715981.

Adding to 1560256140 its reverse (416520651), we get a palindrome (1976776791).

It can be divided in two parts, 156025 and 6140, that added together give a triangular number (162165 = T₅₆₉).

The spelling of 1560256140 in words is "one billion, five hundred sixty million, two hundred fifty-six thousand, one hundred forty".