40019224 has 64 divisors (see below), whose sum is σ = 91791360. Its totient is φ = 15966720.

The previous prime is 40019219. The next prime is 40019227. The reversal of 40019224 is 42291004.

It is a junction number, because it is equal to n+sod(n) for n = 40019195 and 40019204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40019227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120739 + ... + 121069.

It is an arithmetic number, because the mean of its divisors is an integer number (1434240).

Almost surely, 2^40019224 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 40019224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45895680).

40019224 is an abundant number, since it is smaller than the sum of its proper divisors (51772136).

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

40019224 is a wasteful number, since it uses less digits than its factorization.

40019224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488 (or 484 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 40019224 is about 6326.0749284213. The cubic root of 40019224 is about 342.0499681900.

It can be divided in two parts, 4001 and 9224, that added together give a square (13225 = 115²).

The spelling of 40019224 in words is "forty million, nineteen thousand, two hundred twenty-four".