65280280 has 32 divisors (see below), whose sum is σ = 158180400. Its totient is φ = 24103296.

The previous prime is 65280269. The next prime is 65280283. The reversal of 65280280 is 8208256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65280283) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 62250 + ... + 63289.

Almost surely, 2^65280280 is an apocalyptic number.

It is an amenable number.

65280280 is an abundant number, since it is smaller than the sum of its proper divisors (92900120).

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

65280280 is a wasteful number, since it uses less digits than its factorization.

65280280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125563 (or 125559 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 65280280 is about 8079.6212782531. The cubic root of 65280280 is about 402.6496595061.

The spelling of 65280280 in words is "sixty-five million, two hundred eighty thousand, two hundred eighty".