40523400 has 144 divisors (see below), whose sum is σ = 139276800. Its totient is φ = 10554240.

The previous prime is 40523387. The next prime is 40523419. The reversal of 40523400 is 432504.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 35 ways as a sum of consecutive naturals, for example, 84361 + ... + 84839.

It is an arithmetic number, because the mean of its divisors is an integer number (967200).

Almost surely, 2^40523400 is an apocalyptic number.

40523400 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 40523400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69638400).

40523400 is an abundant number, since it is smaller than the sum of its proper divisors (98753400).

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

40523400 is a wasteful number, since it uses less digits than its factorization.

40523400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548 (or 536 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 40523400 is about 6365.7992428288. The cubic root of 40523400 is about 343.4803990773.

Adding to 40523400 its reverse (432504), we get a palindrome (40955904).

The spelling of 40523400 in words is "forty million, five hundred twenty-three thousand, four hundred".