40235481 has 64 divisors (see below), whose sum is σ = 74269440. Its totient is φ = 21150720.

The previous prime is 40235467. The next prime is 40235491. The reversal of 40235481 is 18453204.

It is not a de Polignac number, because 40235481 - 2⁵ = 40235449 is a prime.

It is a super-2 number, since 2×40235481² = 3237787862602722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40235491) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 65331 + ... + 65943.

It is an arithmetic number, because the mean of its divisors is an integer number (1160460).

Almost surely, 2^40235481 is an apocalyptic number.

It is an amenable number.

40235481 is a deficient number, since it is larger than the sum of its proper divisors (34033959).

40235481 is a wasteful number, since it uses less digits than its factorization.

40235481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663 (or 657 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 40235481 is about 6343.1444095180. The cubic root of 40235481 is about 342.6649880856.

Adding to 40235481 its reverse (18453204), we get a palindrome (58688685).

The spelling of 40235481 in words is "forty million, two hundred thirty-five thousand, four hundred eighty-one".