40539072 has 168 divisors, whose sum is σ = 129722880. Its totient is φ = 11128320.

The previous prime is 40539061. The next prime is 40539091. The reversal of 40539072 is 27093504.

It is a tau number, because it is divible by the number of its divisors (168).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 291579 + ... + 291717.

It is an arithmetic number, because the mean of its divisors is an integer number (772160).

Almost surely, 2^40539072 is an apocalyptic number.

40539072 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40539072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64861440).

40539072 is an abundant number, since it is smaller than the sum of its proper divisors (89183808).

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

40539072 is a wasteful number, since it uses less digits than its factorization.

40539072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 40539072 is about 6367.0300768883. The cubic root of 40539072 is about 343.5246725179.

The spelling of 40539072 in words is "forty million, five hundred thirty-nine thousand, seventy-two".