40545400 has 48 divisors (see below), whose sum is σ = 107738640. Its totient is φ = 13900800.

The previous prime is 40545383. The next prime is 40545409. The reversal of 40545400 is 454504.

40545400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40545400² = 3287858922320000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40545409) 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 11 ways as a sum of consecutive naturals, for example, 13081 + ... + 15880.

It is an arithmetic number, because the mean of its divisors is an integer number (2244555).

Almost surely, 2^40545400 is an apocalyptic number.

40545400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40545400 is an abundant number, since it is smaller than the sum of its proper divisors (67193240).

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

40545400 is a wasteful number, since it uses less digits than its factorization.

40545400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28984 (or 28975 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 40545400 is about 6367.5269924830. The cubic root of 40545400 is about 343.5425459004.

Adding to 40545400 its reverse (454504), we get a palindrome (40999904).

The spelling of 40545400 in words is "forty million, five hundred forty-five thousand, four hundred".