40638674 has 8 divisors (see below), whose sum is σ = 60991920. Its totient is φ = 20308036.

The previous prime is 40638673. The next prime is 40638727. The reversal of 40638674 is 47683604.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40638673) 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 in 3 ways as a sum of consecutive naturals, for example, 44 + ... + 9015.

It is an arithmetic number, because the mean of its divisors is an integer number (7623990).

Almost surely, 2^40638674 is an apocalyptic number.

40638674 is a deficient number, since it is larger than the sum of its proper divisors (20353246).

40638674 is a wasteful number, since it uses less digits than its factorization.

40638674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11304.

The product of its (nonzero) digits is 96768, while the sum is 38.

The square root of 40638674 is about 6374.8469785556. The cubic root of 40638674 is about 343.8057820659.

The spelling of 40638674 in words is "forty million, six hundred thirty-eight thousand, six hundred seventy-four".