40144528 has 20 divisors (see below), whose sum is σ = 77995008. Its totient is φ = 20016800.

The previous prime is 40144501. The next prime is 40144529. The reversal of 40144528 is 82544104.

It is a super-2 number, since 2×40144528² = 3223166256685568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40144496 and 40144505.

It is not an unprimeable number, because it can be changed into a prime (40144529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2853 + ... + 9403.

Almost surely, 2^40144528 is an apocalyptic number.

It is an amenable number.

40144528 is a deficient number, since it is larger than the sum of its proper divisors (37850480).

40144528 is a wasteful number, since it uses less digits than its factorization.

40144528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6942 (or 6936 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 40144528 is about 6335.9709595294. The cubic root of 40144528 is about 342.4065932436.

The spelling of 40144528 in words is "forty million, one hundred forty-four thousand, five hundred twenty-eight".