3729640 has 16 divisors (see below), whose sum is σ = 8391780. Its totient is φ = 1491840.

The previous prime is 3729629. The next prime is 3729659. The reversal of 3729640 is 469273.

3729640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3709476 + 20164 = 1926^2 + 142^2 .

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 3 ways as a sum of consecutive naturals, for example, 46581 + ... + 46660.

Almost surely, 2^3729640 is an apocalyptic number.

It is an amenable number.

3729640 is an abundant number, since it is smaller than the sum of its proper divisors (4662140).

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

3729640 is a wasteful number, since it uses less digits than its factorization.

3729640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93252 (or 93248 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 3729640 is about 1931.2275888667. The cubic root of 3729640 is about 155.0799448850.

The spelling of 3729640 in words is "three million, seven hundred twenty-nine thousand, six hundred forty".