40487400 has 144 divisors (see below), whose sum is σ = 138116160. Its totient is φ = 10627200.

The previous prime is 40487371. The next prime is 40487401. The reversal of 40487400 is 478404.

40487400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40487401) 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 35 ways as a sum of consecutive naturals, for example, 149265 + ... + 149535.

It is an arithmetic number, because the mean of its divisors is an integer number (959140).

Almost surely, 2^40487400 is an apocalyptic number.

40487400 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 40487400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69058080).

40487400 is an abundant number, since it is smaller than the sum of its proper divisors (97628760).

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

40487400 is a wasteful number, since it uses less digits than its factorization.

40487400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 40487400 is about 6362.9710041772. The cubic root of 40487400 is about 343.3786557401.

The spelling of 40487400 in words is "forty million, four hundred eighty-seven thousand, four hundred".