40006672 has 10 divisors (see below), whose sum is σ = 77512958. Its totient is φ = 20003328.

The previous prime is 40006663. The next prime is 40006697. The reversal of 40006672 is 27660004.

It can be written as a sum of positive squares in only one way, i.e., 39740416 + 266256 = 6304^2 + 516^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250193 + ... + 1250224.

Almost surely, 2^40006672 is an apocalyptic number.

It is an amenable number.

40006672 is a deficient number, since it is larger than the sum of its proper divisors (37506286).

40006672 is a wasteful number, since it uses less digits than its factorization.

40006672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500425 (or 2500419 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 40006672 is about 6325.0827662569. The cubic root of 40006672 is about 342.0142032107.

Adding to 40006672 its reverse (27660004), we get a palindrome (67666676).

The spelling of 40006672 in words is "forty million, six thousand, six hundred seventy-two".