40723648 has 28 divisors (see below), whose sum is σ = 92356432. Its totient is φ = 17452800.

The previous prime is 40723601. The next prime is 40723651. The reversal of 40723648 is 84632704.

It is a tau number, because it is divible by the number of its divisors (28).

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, 45003 + ... + 45898.

It is an arithmetic number, because the mean of its divisors is an integer number (3298444).

Almost surely, 2^40723648 is an apocalyptic number.

It is an amenable number.

40723648 is an abundant number, since it is smaller than the sum of its proper divisors (51632784).

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

40723648 is an equidigital number, since it uses as much as digits as its factorization.

40723648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90920 (or 90910 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 40723648 is about 6381.5082856641. The cubic root of 40723648 is about 344.0452437337.

The spelling of 40723648 in words is "forty million, seven hundred twenty-three thousand, six hundred forty-eight".