1560964720 has 80 divisors (see below), whose sum is σ = 4154966208. Its totient is φ = 534251520.

The previous prime is 1560964663. The next prime is 1560964723. The reversal of 1560964720 is 274690651.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1560964720² = 4873221714169356800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1560964723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368052 + ... + 372268.

Almost surely, 2^1560964720 is an apocalyptic number.

1560964720 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 1560964720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2077483104).

1560964720 is an abundant number, since it is smaller than the sum of its proper divisors (2594001488).

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

1560964720 is a wasteful number, since it uses less digits than its factorization.

1560964720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4898 (or 4892 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 1560964720 is about 39509.0460527713. The cubic root of 1560964720 is about 1160.0170231350.

The spelling of 1560964720 in words is "one billion, five hundred sixty million, nine hundred sixty-four thousand, seven hundred twenty".