65928540 has 48 divisors (see below), whose sum is σ = 184953888. Its totient is φ = 17547264.

The previous prime is 65928523. The next prime is 65928553. The reversal of 65928540 is 4582956.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56604 + ... + 57756.

It is an arithmetic number, because the mean of its divisors is an integer number (3853206).

Almost surely, 2^65928540 is an apocalyptic number.

65928540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65928540 is an abundant number, since it is smaller than the sum of its proper divisors (119025348).

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

65928540 is a wasteful number, since it uses less digits than its factorization.

65928540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2118 (or 2116 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 65928540 is about 8119.6391545438. The cubic root of 65928540 is about 403.9780973650.

The spelling of 65928540 in words is "sixty-five million, nine hundred twenty-eight thousand, five hundred forty".