45342728 has 8 divisors (see below), whose sum is σ = 85017630. Its totient is φ = 22671360.

The previous prime is 45342727. The next prime is 45342749. The reversal of 45342728 is 82724354.

It can be written as a sum of positive squares in only one way, i.e., 41964484 + 3378244 = 6478^2 + 1838^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (45342727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2833913 + ... + 2833928.

Almost surely, 2^45342728 is an apocalyptic number.

It is an amenable number.

45342728 is a deficient number, since it is larger than the sum of its proper divisors (39674902).

45342728 is a wasteful number, since it uses less digits than its factorization.

45342728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5667847 (or 5667843 counting only the distinct ones).

The product of its digits is 53760, while the sum is 35.

The square root of 45342728 is about 6733.7009140591. The cubic root of 45342728 is about 356.5900453610.

The spelling of 45342728 in words is "forty-five million, three hundred forty-two thousand, seven hundred twenty-eight".