40281500 has 96 divisors (see below), whose sum is σ = 106614144. Its totient is φ = 12979200.

The previous prime is 40281469. The next prime is 40281503. The reversal of 40281500 is 518204.

40281500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40281503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59162 + ... + 59838.

It is an arithmetic number, because the mean of its divisors is an integer number (1110564).

Almost surely, 2^40281500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40281500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53307072).

40281500 is an abundant number, since it is smaller than the sum of its proper divisors (66332644).

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

40281500 is a wasteful number, since it uses less digits than its factorization.

40281500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720 (or 708 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 40281500 is about 6346.7708324785. The cubic root of 40281500 is about 342.7955783970.

Adding to 40281500 its reverse (518204), we get a palindrome (40799704).

The spelling of 40281500 in words is "forty million, two hundred eighty-one thousand, five hundred".