40325220 has 144 divisors (see below), whose sum is σ = 138815040. Its totient is φ = 9393408.

The previous prime is 40325213. The next prime is 40325237. The reversal of 40325220 is 2252304.

It is a super-2 number, since 2×40325220² = 3252246736096800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 40325193 and 40325202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44007 + ... + 44913.

Almost surely, 2^40325220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40325220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69407520).

40325220 is an abundant number, since it is smaller than the sum of its proper divisors (98489820).

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

40325220 is a wasteful number, since it uses less digits than its factorization.

40325220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954 (or 949 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 40325220 is about 6350.2141696166. The cubic root of 40325220 is about 342.9195526270.

Adding to 40325220 its reverse (2252304), we get a palindrome (42577524).

The spelling of 40325220 in words is "forty million, three hundred twenty-five thousand, two hundred twenty".