40053220 has 12 divisors (see below), whose sum is σ = 84111804. Its totient is φ = 16021280.

The previous prime is 40053217. The next prime is 40053229. The reversal of 40053220 is 2235004.

It can be written as a sum of positive squares in 2 ways, for example, as 17089956 + 22963264 = 4134^2 + 4792^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40053194 and 40053203.

It is not an unprimeable number, because it can be changed into a prime (40053229) 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, 1001311 + ... + 1001350.

It is an arithmetic number, because the mean of its divisors is an integer number (7009317).

Almost surely, 2^40053220 is an apocalyptic number.

It is an amenable number.

40053220 is an abundant number, since it is smaller than the sum of its proper divisors (44058584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40053220 is a wasteful number, since it uses less digits than its factorization.

40053220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002670 (or 2002668 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 40053220 is about 6328.7613322040. The cubic root of 40053220 is about 342.1467969837.

Adding to 40053220 its reverse (2235004), we get a palindrome (42288224).

It can be divided in two parts, 4005 and 3220, that added together give a square (7225 = 85²).

The spelling of 40053220 in words is "forty million, fifty-three thousand, two hundred twenty".