40134728 has 16 divisors (see below), whose sum is σ = 76099500. Its totient is φ = 19841536.

The previous prime is 40134719. The next prime is 40134749. The reversal of 40134728 is 82743104.

It can be written as a sum of positive squares in 2 ways, for example, as 33154564 + 6980164 = 5758^2 + 2642^2 .

It is a super-2 number, since 2×40134728² = 3221592783267968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40134728.

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, 27473 + ... + 28896.

Almost surely, 2^40134728 is an apocalyptic number.

It is an amenable number.

40134728 is a deficient number, since it is larger than the sum of its proper divisors (35964772).

40134728 is a wasteful number, since it uses less digits than its factorization.

40134728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56464 (or 56460 counting only the distinct ones).

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

The square root of 40134728 is about 6335.1975501953. The cubic root of 40134728 is about 342.3787284439.

The spelling of 40134728 in words is "forty million, one hundred thirty-four thousand, seven hundred twenty-eight".