40500000 has 210 divisors, whose sum is σ = 148884813. Its totient is φ = 10800000.

The previous prime is 40499993. The next prime is 40500011. The reversal of 40500000 is 504.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

40500000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6906384 + 33593616 = 2628^2 + 5796^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=4500.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an unprimeable number.

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 34 ways as a sum of consecutive naturals, for example, 8099998 + ... + 8100002.

Almost surely, 2^40500000 is an apocalyptic number.

40500000 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 40500000

40500000 is an abundant number, since it is smaller than the sum of its proper divisors (108384813).

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

40500000 is an frugal number, since it uses more digits than its factorization.

40500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52 (or 10 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 9.

The square root of 40500000 is about 6363.9610306789. The cubic root of 40500000 is about 343.4142727660.

Adding to 40500000 its reverse (504), we get a palindrome (40500504).

The spelling of 40500000 in words is "forty million, five hundred thousand".