40144530 has 32 divisors (see below), whose sum is σ = 101419200. Its totient is φ = 10141632.

The previous prime is 40144529. The next prime is 40144537. The reversal of 40144530 is 3544104.

It is a super-2 number, since 2×40144530² = 3223166577841800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40144497 and 40144506.

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 15 ways as a sum of consecutive naturals, for example, 34645 + ... + 35784.

It is an arithmetic number, because the mean of its divisors is an integer number (3169350).

Almost surely, 2^40144530 is an apocalyptic number.

40144530 is an abundant number, since it is smaller than the sum of its proper divisors (61274670).

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

40144530 is a wasteful number, since it uses less digits than its factorization.

40144530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70458.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 40144530 is about 6335.9711173584. The cubic root of 40144530 is about 342.4065989299.

Adding to 40144530 its reverse (3544104), we get a palindrome (43688634).

The spelling of 40144530 in words is "forty million, one hundred forty-four thousand, five hundred thirty".