40281872 has 10 divisors (see below), whose sum is σ = 78046158. Its totient is φ = 20140928.

The previous prime is 40281859. The next prime is 40281877. The reversal of 40281872 is 27818204.

It can be written as a sum of positive squares in only one way, i.e., 37405456 + 2876416 = 6116^2 + 1696^2 .

It is not an unprimeable number, because it can be changed into a prime (40281877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1258793 + ... + 1258824.

Almost surely, 2^40281872 is an apocalyptic number.

It is an amenable number.

40281872 is a deficient number, since it is larger than the sum of its proper divisors (37764286).

40281872 is a wasteful number, since it uses less digits than its factorization.

40281872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2517625 (or 2517619 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 40281872 is about 6346.8001386525. The cubic root of 40281872 is about 342.7966336338.

The spelling of 40281872 in words is "forty million, two hundred eighty-one thousand, eight hundred seventy-two".