40649672 has 32 divisors (see below), whose sum is σ = 87981120. Its totient is φ = 17246400.

The previous prime is 40649659. The next prime is 40649699. The reversal of 40649672 is 27694604.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2063 + ... + 9249.

It is an arithmetic number, because the mean of its divisors is an integer number (2749410).

Almost surely, 2^40649672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40649672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43990560).

40649672 is an abundant number, since it is smaller than the sum of its proper divisors (47331448).

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

40649672 is a wasteful number, since it uses less digits than its factorization.

40649672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7301 (or 7297 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 40649672 is about 6375.7095291426. The cubic root of 40649672 is about 343.8367938631.

The spelling of 40649672 in words is "forty million, six hundred forty-nine thousand, six hundred seventy-two".