40728970 has 16 divisors (see below), whose sum is σ = 77171040. Its totient is φ = 15434064.

The previous prime is 40728967. The next prime is 40728979. The reversal of 40728970 is 7982704.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40728979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106992 + ... + 107371.

It is an arithmetic number, because the mean of its divisors is an integer number (4823190).

Almost surely, 2^40728970 is an apocalyptic number.

40728970 is a deficient number, since it is larger than the sum of its proper divisors (36442070).

40728970 is a wasteful number, since it uses less digits than its factorization.

40728970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214389.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 40728970 is about 6381.9252581020. The cubic root of 40728970 is about 344.0602303497.

The spelling of 40728970 in words is "forty million, seven hundred twenty-eight thousand, nine hundred seventy".