40352530 has 16 divisors (see below), whose sum is σ = 73355544. Its totient is φ = 15980800.

The previous prime is 40352503. The next prime is 40352531. The reversal of 40352530 is 3525304.

It can be written as a sum of positive squares in 4 ways, for example, as 40284409 + 68121 = 6347^2 + 261^2 .

It is not an unprimeable number, because it can be changed into a prime (40352531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18967 + ... + 20986.

Almost surely, 2^40352530 is an apocalyptic number.

40352530 is a deficient number, since it is larger than the sum of its proper divisors (33003014).

40352530 is a wasteful number, since it uses less digits than its factorization.

40352530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40061.

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 40352530 is about 6352.3641268429. The cubic root of 40352530 is about 342.9969485232.

Adding to 40352530 its reverse (3525304), we get a palindrome (43877834).

The spelling of 40352530 in words is "forty million, three hundred fifty-two thousand, five hundred thirty".