40182500 has 30 divisors (see below), whose sum is σ = 87876558. Its totient is φ = 16072000.

The previous prime is 40182491. The next prime is 40182503. The reversal of 40182500 is 528104.

It can be written as a sum of positive squares in 5 ways, for example, as 22676644 + 17505856 = 4762^2 + 4184^2 .

It is a super-2 number, since 2×40182500² = 3229266612500000, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (40182503) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 5537 + ... + 10536.

Almost surely, 2^40182500 is an apocalyptic number.

It is an amenable number.

40182500 is an abundant number, since it is smaller than the sum of its proper divisors (47694058).

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

40182500 is a wasteful number, since it uses less digits than its factorization.

40182500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16097 (or 16080 counting only the distinct ones).

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

The square root of 40182500 is about 6338.9667927826. The cubic root of 40182500 is about 342.5145180057.

The spelling of 40182500 in words is "forty million, one hundred eighty-two thousand, five hundred".