65280384 has 128 divisors (see below), whose sum is σ = 207631200. Its totient is φ = 20072448.

The previous prime is 65280361. The next prime is 65280401. The reversal of 65280384 is 48308256.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 44202 + ... + 45654.

Almost surely, 2^65280384 is an apocalyptic number.

65280384 is a gapful number since it is divisible by the number (64) 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 65280384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103815600).

65280384 is an abundant number, since it is smaller than the sum of its proper divisors (142350816).

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

65280384 is a wasteful number, since it uses less digits than its factorization.

65280384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489 (or 1471 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 65280384 is about 8079.6277141957. The cubic root of 65280384 is about 402.6498733305.

The spelling of 65280384 in words is "sixty-five million, two hundred eighty thousand, three hundred eighty-four".