40667220 has 288 divisors, whose sum is σ = 150958080. Its totient is φ = 8743680.

The previous prime is 40667219. The next prime is 40667233. The reversal of 40667220 is 2276604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 865237 + ... + 865283.

It is an arithmetic number, because the mean of its divisors is an integer number (524160).

Almost surely, 2^40667220 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 40667220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75479040).

40667220 is an abundant number, since it is smaller than the sum of its proper divisors (110290860).

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

40667220 is a wasteful number, since it uses less digits than its factorization.

40667220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 40667220 is about 6377.0855412171. The cubic root of 40667220 is about 343.8862635533.

The spelling of 40667220 in words is "forty million, six hundred sixty-seven thousand, two hundred twenty".