40221204 has 48 divisors (see below), whose sum is σ = 99576960. Its totient is φ = 12608640.

The previous prime is 40221199. The next prime is 40221221. The reversal of 40221204 is 40212204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15642 + ... + 18030.

It is an arithmetic number, because the mean of its divisors is an integer number (2074520).

Almost surely, 2^40221204 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 40221204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49788480).

40221204 is an abundant number, since it is smaller than the sum of its proper divisors (59355756).

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

40221204 is a wasteful number, since it uses less digits than its factorization.

40221204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480 (or 2478 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 40221204 is about 6342.0189214476. The cubic root of 40221204 is about 342.6244533248.

Adding to 40221204 its reverse (40212204), we get a palindrome (80433408).

The spelling of 40221204 in words is "forty million, two hundred twenty-one thousand, two hundred four".