40272128 has 36 divisors (see below), whose sum is σ = 86577708. Its totient is φ = 18585600.

The previous prime is 40272079. The next prime is 40272137. The reversal of 40272128 is 82127204.

It can be written as a sum of positive squares in 2 ways, for example, as 27541504 + 12730624 = 5248^2 + 3568^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 40272097 and 40272106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2723 + ... + 9378.

Almost surely, 2^40272128 is an apocalyptic number.

It is an amenable number.

40272128 is an abundant number, since it is smaller than the sum of its proper divisors (46305580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40272128 is a wasteful number, since it uses less digits than its factorization.

40272128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12130 (or 12116 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 40272128 is about 6346.0324613100. The cubic root of 40272128 is about 342.7689910939.

The spelling of 40272128 in words is "forty million, two hundred seventy-two thousand, one hundred twenty-eight".