42928660 has 12 divisors (see below), whose sum is σ = 90150228. Its totient is φ = 17171456.

The previous prime is 42928643. The next prime is 42928661. The reversal of 42928660 is 6682924.

It can be written as a sum of positive squares in 2 ways, for example, as 28579716 + 14348944 = 5346^2 + 3788^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42928661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1073197 + ... + 1073236.

It is an arithmetic number, because the mean of its divisors is an integer number (7512519).

Almost surely, 2^42928660 is an apocalyptic number.

It is an amenable number.

42928660 is an abundant number, since it is smaller than the sum of its proper divisors (47221568).

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

42928660 is a wasteful number, since it uses less digits than its factorization.

42928660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146442 (or 2146440 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 42928660 is about 6551.9966422458. The cubic root of 42928660 is about 350.1459527336.

The spelling of 42928660 in words is "forty-two million, nine hundred twenty-eight thousand, six hundred sixty".