1065245280 has 144 divisors (see below), whose sum is σ = 3688502832. Its totient is φ = 258227200.

The previous prime is 1065245239. The next prime is 1065245287. The reversal of 1065245280 is 825425601.

1065245280 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1065245280² = 2269495013124556800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065245287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48910 + ... + 67250.

It is an arithmetic number, because the mean of its divisors is an integer number (25614603).

Almost surely, 2^1065245280 is an apocalyptic number.

1065245280 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 1065245280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1844251416).

1065245280 is an abundant number, since it is smaller than the sum of its proper divisors (2623257552).

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

1065245280 is a wasteful number, since it uses less digits than its factorization.

1065245280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18381 (or 18362 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 1065245280 is about 32638.0955326747. The cubic root of 1065245280 is about 1021.2918656154.

The spelling of 1065245280 in words is "one billion, sixty-five million, two hundred forty-five thousand, two hundred eighty".