65028015 has 96 divisors (see below), whose sum is σ = 132088320. Its totient is φ = 30450816.

The previous prime is 65028001. The next prime is 65028017. The reversal of 65028015 is 51082056.

65028015 is a `hidden beast` number, since 650 + 2 + 8 + 0 + 1 + 5 = 666.

It is not a de Polignac number, because 65028015 - 2⁹ = 65027503 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 65028015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65028017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 363196 + ... + 363374.

It is an arithmetic number, because the mean of its divisors is an integer number (1375920).

Almost surely, 2^65028015 is an apocalyptic number.

65028015 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

65028015 is an abundant number, since it is smaller than the sum of its proper divisors (67060305).

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

65028015 is a wasteful number, since it uses less digits than its factorization.

65028015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 65028015 is about 8063.9949776770. The cubic root of 65028015 is about 402.1303319888.

The spelling of 65028015 in words is "sixty-five million, twenty-eight thousand, fifteen".