40219648 has 88 divisors (see below), whose sum is σ = 95373824. Its totient is φ = 16588800.

The previous prime is 40219643. The next prime is 40219649. The reversal of 40219648 is 84691204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40219643) 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, 222118 + ... + 222298.

Almost surely, 2^40219648 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 40219648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47686912).

40219648 is an abundant number, since it is smaller than the sum of its proper divisors (55154176).

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

40219648 is a wasteful number, since it uses less digits than its factorization.

40219648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 40219648 is about 6341.8962463919. The cubic root of 40219648 is about 342.6200350042.

The spelling of 40219648 in words is "forty million, two hundred nineteen thousand, six hundred forty-eight".