40236505 has 8 divisors (see below), whose sum is σ = 48945672. Its totient is φ = 31747968.

The previous prime is 40236461. The next prime is 40236527. The reversal of 40236505 is 50563204.

It can be written as a sum of positive squares in 4 ways, for example, as 15515721 + 24720784 = 3939^2 + 4972^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 40236505 - 2⁷ = 40236377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40236505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54754 + ... + 55483.

It is an arithmetic number, because the mean of its divisors is an integer number (6118209).

Almost surely, 2^40236505 is an apocalyptic number.

It is an amenable number.

40236505 is a deficient number, since it is larger than the sum of its proper divisors (8709167).

40236505 is a wasteful number, since it uses less digits than its factorization.

40236505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110315.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 40236505 is about 6343.2251260695. The cubic root of 40236505 is about 342.6678950222.

Adding to 40236505 its reverse (50563204), we get a palindrome (90799709).

The spelling of 40236505 in words is "forty million, two hundred thirty-six thousand, five hundred five".