40645772 has 6 divisors (see below), whose sum is σ = 71130108. Its totient is φ = 20322884.

The previous prime is 40645747. The next prime is 40645777. The reversal of 40645772 is 27754604.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (40645777) 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, 5080718 + ... + 5080725.

It is an arithmetic number, because the mean of its divisors is an integer number (11855018).

Almost surely, 2^40645772 is an apocalyptic number.

It is an amenable number.

40645772 is a deficient number, since it is larger than the sum of its proper divisors (30484336).

40645772 is a wasteful number, since it uses less digits than its factorization.

40645772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10161447 (or 10161445 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 40645772 is about 6375.4036734939. The cubic root of 40645772 is about 343.8257974120.

The spelling of 40645772 in words is "forty million, six hundred forty-five thousand, seven hundred seventy-two".