40181300 has 18 divisors (see below), whose sum is σ = 87193638. Its totient is φ = 16072480.

The previous prime is 40181291. The next prime is 40181303. The reversal of 40181300 is 318104.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 289444 + 39891856 = 538^2 + 6316^2 .

It is a super-2 number, since 2×40181300² = 3229073739380000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40181303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 200807 + ... + 201006.

It is an arithmetic number, because the mean of its divisors is an integer number (4844091).

Almost surely, 2^40181300 is an apocalyptic number.

It is an amenable number.

40181300 is an abundant number, since it is smaller than the sum of its proper divisors (47012338).

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

40181300 is a wasteful number, since it uses less digits than its factorization.

40181300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401827 (or 401820 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 40181300 is about 6338.8721394267. The cubic root of 40181300 is about 342.5111083829.

Adding to 40181300 its reverse (318104), we get a palindrome (40499404).

The spelling of 40181300 in words is "forty million, one hundred eighty-one thousand, three hundred".