40224623 has 4 divisors (see below), whose sum is σ = 40240248. Its totient is φ = 40209000.

The previous prime is 40224619. The next prime is 40224641. The reversal of 40224623 is 32642204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40224623 - 2² = 40224619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40224643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2936 + ... + 9437.

It is an arithmetic number, because the mean of its divisors is an integer number (10060062).

Almost surely, 2^40224623 is an apocalyptic number.

40224623 is a deficient number, since it is larger than the sum of its proper divisors (15625).

40224623 is a wasteful number, since it uses less digits than its factorization.

40224623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15624.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 40224623 is about 6342.2884671071. The cubic root of 40224623 is about 342.6341613039.

Adding to 40224623 its reverse (32642204), we get a palindrome (72866827).

The spelling of 40224623 in words is "forty million, two hundred twenty-four thousand, six hundred twenty-three".