40220285 has 8 divisors (see below), whose sum is σ = 55159296. Its totient is φ = 27579600.

The previous prime is 40220273. The next prime is 40220287. The reversal of 40220285 is 58202204.

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

It is not a de Polignac number, because 40220285 - 2¹⁶ = 40154749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40220285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40220287) 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, 574541 + ... + 574610.

It is an arithmetic number, because the mean of its divisors is an integer number (6894912).

Almost surely, 2^40220285 is an apocalyptic number.

It is an amenable number.

40220285 is a deficient number, since it is larger than the sum of its proper divisors (14939011).

40220285 is a wasteful number, since it uses less digits than its factorization.

40220285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149163.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 40220285 is about 6341.9464677652. The cubic root of 40220285 is about 342.6218438035.

Adding to 40220285 its reverse (58202204), we get a palindrome (98422489).

The spelling of 40220285 in words is "forty million, two hundred twenty thousand, two hundred eighty-five".