40253530 has 8 divisors (see below), whose sum is σ = 72456372. Its totient is φ = 16101408.

The previous prime is 40253509. The next prime is 40253561. The reversal of 40253530 is 3535204.

40253530 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in 2 ways, for example, as 40233649 + 19881 = 6343^2 + 141^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2012667 + ... + 2012686.

Almost surely, 2^40253530 is an apocalyptic number.

40253530 is a deficient number, since it is larger than the sum of its proper divisors (32202842).

40253530 is a wasteful number, since it uses less digits than its factorization.

40253530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4025360.

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

The square root of 40253530 is about 6344.5669670987. The cubic root of 40253530 is about 342.7162184562.

Adding to 40253530 its reverse (3535204), we get a palindrome (43788734).

The spelling of 40253530 in words is "forty million, two hundred fifty-three thousand, five hundred thirty".