32728425615 has 96 divisors (see below), whose sum is σ = 59382435840. Its totient is φ = 16656192000.

The previous prime is 32728425599. The next prime is 32728425647. The reversal of 32728425615 is 51652482723.

32728425615 is a `hidden beast` number, since 3 + 2 + 7 + 2 + 8 + 4 + 25 + 615 = 666.

It is not a de Polignac number, because 32728425615 - 2⁴ = 32728425599 is a prime.

It is a super-2 number, since 2×32728425615² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 54456315 + ... + 54456915.

It is an arithmetic number, because the mean of its divisors is an integer number (618567040).

Almost surely, 2^32728425615 is an apocalyptic number.

32728425615 is a deficient number, since it is larger than the sum of its proper divisors (26654010225).

32728425615 is a wasteful number, since it uses less digits than its factorization.

32728425615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125 (or 1122 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The spelling of 32728425615 in words is "thirty-two billion, seven hundred twenty-eight million, four hundred twenty-five thousand, six hundred fifteen".