40728087 has 12 divisors (see below), whose sum is σ = 59636304. Its totient is φ = 26779680.

The previous prime is 40728071. The next prime is 40728097. The reversal of 40728087 is 78082704.

It is not a de Polignac number, because 40728087 - 2⁴ = 40728071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40728097) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30339 + ... + 31652.

It is an arithmetic number, because the mean of its divisors is an integer number (4969692).

Almost surely, 2^40728087 is an apocalyptic number.

40728087 is a deficient number, since it is larger than the sum of its proper divisors (18908217).

40728087 is a wasteful number, since it uses less digits than its factorization.

40728087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62070 (or 62067 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 40728087 is about 6381.8560779761. The cubic root of 40728087 is about 344.0577439346.

The spelling of 40728087 in words is "forty million, seven hundred twenty-eight thousand, eighty-seven".