40752728 has 8 divisors (see below), whose sum is σ = 76411380. Its totient is φ = 20376360.

The previous prime is 40752727. The next prime is 40752731. The reversal of 40752728 is 82725704.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40752727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2547038 + ... + 2547053.

Almost surely, 2^40752728 is an apocalyptic number.

It is an amenable number.

40752728 is a deficient number, since it is larger than the sum of its proper divisors (35658652).

40752728 is a wasteful number, since it uses less digits than its factorization.

40752728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5094097 (or 5094093 counting only the distinct ones).

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

The square root of 40752728 is about 6383.7863372766. The cubic root of 40752728 is about 344.1271163532.

It can be divided in two parts, 407 and 52728, that added together give a palindrome (53135).

The spelling of 40752728 in words is "forty million, seven hundred fifty-two thousand, seven hundred twenty-eight".