40071504 has 80 divisors (see below), whose sum is σ = 116867520. Its totient is φ = 11719680.

The previous prime is 40071467. The next prime is 40071509. The reversal of 40071504 is 40517004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40071509) 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 in 15 ways as a sum of consecutive naturals, for example, 14004 + ... + 16620.

It is an arithmetic number, because the mean of its divisors is an integer number (1460844).

Almost surely, 2^40071504 is an apocalyptic number.

40071504 is a gapful number since it is divisible by the number (44) 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 40071504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58433760).

40071504 is an abundant number, since it is smaller than the sum of its proper divisors (76796016).

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

40071504 is a wasteful number, since it uses less digits than its factorization.

40071504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2668 (or 2662 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 40071504 is about 6330.2056838621. The cubic root of 40071504 is about 342.1988515615.

Adding to 40071504 its reverse (40517004), we get a palindrome (80588508).

The spelling of 40071504 in words is "forty million, seventy-one thousand, five hundred four".