40620245 has 8 divisors (see below), whose sum is σ = 49037184. Its totient is φ = 32300944.

The previous prime is 40620197. The next prime is 40620247. The reversal of 40620245 is 54202604.

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 40620245 - 2¹⁰ = 40619221 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 40620245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40620247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23489 + ... + 25158.

It is an arithmetic number, because the mean of its divisors is an integer number (6129648).

Almost surely, 2^40620245 is an apocalyptic number.

It is an amenable number.

40620245 is a deficient number, since it is larger than the sum of its proper divisors (8416939).

40620245 is a wasteful number, since it uses less digits than its factorization.

40620245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48819.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 40620245 is about 6373.4013681864. The cubic root of 40620245 is about 343.7538040350.

Adding to 40620245 its reverse (54202604), we get a palindrome (94822849).

The spelling of 40620245 in words is "forty million, six hundred twenty thousand, two hundred forty-five".