40512330 has 24 divisors (see below), whose sum is σ = 105332292. Its totient is φ = 10803264.

The previous prime is 40512317. The next prime is 40512337. The reversal of 40512330 is 3321504.

It can be written as a sum of positive squares in 2 ways, for example, as 35676729 + 4835601 = 5973^2 + 2199^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (40512337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224979 + ... + 225158.

Almost surely, 2^40512330 is an apocalyptic number.

40512330 is an abundant number, since it is smaller than the sum of its proper divisors (64819962).

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

40512330 is a wasteful number, since it uses less digits than its factorization.

40512330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450150 (or 450147 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 40512330 is about 6364.9296932488. The cubic root of 40512330 is about 343.4491194191.

Adding to 40512330 its reverse (3321504), we get a palindrome (43833834).

The spelling of 40512330 in words is "forty million, five hundred twelve thousand, three hundred thirty".