40223534 has 16 divisors (see below), whose sum is σ = 65088240. Its totient is φ = 18532800.

The previous prime is 40223509. The next prime is 40223537. The reversal of 40223534 is 43532204.

40223534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40223537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21434 + ... + 23234.

It is an arithmetic number, because the mean of its divisors is an integer number (4068015).

Almost surely, 2^40223534 is an apocalyptic number.

40223534 is a deficient number, since it is larger than the sum of its proper divisors (24864706).

40223534 is a wasteful number, since it uses less digits than its factorization.

40223534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2675.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 40223534 is about 6342.2026142343. The cubic root of 40223534 is about 342.6310692345.

Adding to 40223534 its reverse (43532204), we get a palindrome (83755738).

The spelling of 40223534 in words is "forty million, two hundred twenty-three thousand, five hundred thirty-four".