40260728 has 16 divisors (see below), whose sum is σ = 77245080. Its totient is φ = 19662048.

The previous prime is 40260713. The next prime is 40260739. The reversal of 40260728 is 82706204.

It is a self number, because there is not a number n which added to its sum of digits gives 40260728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58175 + ... + 58862.

Almost surely, 2^40260728 is an apocalyptic number.

It is an amenable number.

40260728 is a deficient number, since it is larger than the sum of its proper divisors (36984352).

40260728 is a wasteful number, since it uses less digits than its factorization.

40260728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117086 (or 117082 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 40260728 is about 6345.1341987384. The cubic root of 40260728 is about 342.7366450235.

The spelling of 40260728 in words is "forty million, two hundred sixty thousand, seven hundred twenty-eight".