40144532 has 12 divisors (see below), whose sum is σ = 71578836. Its totient is φ = 19693440.

The previous prime is 40144529. The next prime is 40144537. The reversal of 40144532 is 23544104.

It can be written as a sum of positive squares in 2 ways, for example, as 33570436 + 6574096 = 5794^2 + 2564^2 .

It is a super-2 number, since 2×40144532² = 3223166898998048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40144498 and 40144507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40144537) 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 3 ways as a sum of consecutive naturals, for example, 94469 + ... + 94892.

It is an arithmetic number, because the mean of its divisors is an integer number (5964903).

Almost surely, 2^40144532 is an apocalyptic number.

It is an amenable number.

40144532 is a deficient number, since it is larger than the sum of its proper divisors (31434304).

40144532 is a wasteful number, since it uses less digits than its factorization.

40144532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189418 (or 189416 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 40144532 is about 6335.9712751874. The cubic root of 40144532 is about 342.4066046161.

Adding to 40144532 its reverse (23544104), we get a palindrome (63688636).

The spelling of 40144532 in words is "forty million, one hundred forty-four thousand, five hundred thirty-two".