65201280 has 128 divisors (see below), whose sum is σ = 215179200. Its totient is φ = 16773120.

The previous prime is 65201261. The next prime is 65201291. The reversal of 65201280 is 8210256.

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 (24).

It is a self number, because there is not a number n which added to its sum of digits gives 65201280.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 55095 + ... + 56265.

Almost surely, 2^65201280 is an apocalyptic number.

65201280 is a gapful number since it is divisible by the number (60) 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 65201280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107589600).

65201280 is an abundant number, since it is smaller than the sum of its proper divisors (149977920).

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

65201280 is a wasteful number, since it uses less digits than its factorization.

65201280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222 (or 1210 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 65201280 is about 8074.7309552703. The cubic root of 65201280 is about 402.4871695819.

The spelling of 65201280 in words is "sixty-five million, two hundred one thousand, two hundred eighty".