40523616 has 72 divisors (see below), whose sum is σ = 131708304. Its totient is φ = 11577600.

The previous prime is 40523579. The next prime is 40523629. The reversal of 40523616 is 61632504.

40523616 is a `hidden beast` number, since 40 + 5 + 2 + 3 + 616 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 40523616.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8035 + ... + 12066.

It is an arithmetic number, because the mean of its divisors is an integer number (1829282).

Almost surely, 2^40523616 is an apocalyptic number.

It is an amenable number.

40523616 is an abundant number, since it is smaller than the sum of its proper divisors (91184688).

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

40523616 is a wasteful number, since it uses less digits than its factorization.

40523616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20124 (or 20113 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 40523616 is about 6365.8162084685. The cubic root of 40523616 is about 343.4810093555.

The spelling of 40523616 in words is "forty million, five hundred twenty-three thousand, six hundred sixteen".