40728275 has 24 divisors (see below), whose sum is σ = 58043904. Its totient is φ = 27770400.

The previous prime is 40728271. The next prime is 40728283. The reversal of 40728275 is 57282704.

It is not a de Polignac number, because 40728275 - 2² = 40728271 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40728271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36374 + ... + 37476.

It is an arithmetic number, because the mean of its divisors is an integer number (2418496).

Almost surely, 2^40728275 is an apocalyptic number.

40728275 is a deficient number, since it is larger than the sum of its proper divisors (17315629).

40728275 is a wasteful number, since it uses less digits than its factorization.

40728275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331 (or 1326 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 40728275 is about 6381.8708072163. The cubic root of 40728275 is about 344.0582733216.

It can be divided in two parts, 407 and 28275, that added together give a palindrome (28682).

The spelling of 40728275 in words is "forty million, seven hundred twenty-eight thousand, two hundred seventy-five".