40381560 has 96 divisors (see below), whose sum is σ = 136974240. Its totient is φ = 10298112.

The previous prime is 40381531. The next prime is 40381577. The reversal of 40381560 is 6518304.

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, 5842 + ... + 10718.

It is an arithmetic number, because the mean of its divisors is an integer number (1426815).

Almost surely, 2^40381560 is an apocalyptic number.

40381560 is a gapful number since it is divisible by the number (40) 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 40381560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68487120).

40381560 is an abundant number, since it is smaller than the sum of its proper divisors (96592680).

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

40381560 is a wasteful number, since it uses less digits than its factorization.

40381560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4917 (or 4910 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 40381560 is about 6354.6486920994. The cubic root of 40381560 is about 343.0791805799.

Adding to 40381560 its reverse (6518304), we get a palindrome (46899864).

The spelling of 40381560 in words is "forty million, three hundred eighty-one thousand, five hundred sixty".