731206560 has 192 divisors, whose sum is σ = 2645395200. Its totient is φ = 166305792.

The previous prime is 731206559. The next prime is 731206607. The reversal of 731206560 is 65602137.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 903436 + ... + 904244.

It is an arithmetic number, because the mean of its divisors is an integer number (13778100).

Almost surely, 2^731206560 is an apocalyptic number.

731206560 is a gapful number since it is divisible by the number (70) 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 731206560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1322697600).

731206560 is an abundant number, since it is smaller than the sum of its proper divisors (1914188640).

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

731206560 is a wasteful number, since it uses less digits than its factorization.

731206560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103 (or 1095 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 731206560 is about 27040.8313481668. The cubic root of 731206560 is about 900.9071347495.

Adding to 731206560 its reverse (65602137), we get a palindrome (796808697).

The spelling of 731206560 in words is "seven hundred thirty-one million, two hundred six thousand, five hundred sixty".