40028394224 has 160 divisors (see below), whose sum is σ = 100368992640. Its totient is φ = 15037747200.

The previous prime is 40028394223. The next prime is 40028394233. The reversal of 40028394224 is 42249382004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40028394223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2567894 + ... + 2583434.

It is an arithmetic number, because the mean of its divisors is an integer number (627306204).

Almost surely, 2^40028394224 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 40028394224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50184496320).

40028394224 is an abundant number, since it is smaller than the sum of its proper divisors (60340598416).

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

40028394224 is a wasteful number, since it uses less digits than its factorization.

40028394224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15659 (or 15653 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 38.

The spelling of 40028394224 in words is "forty billion, twenty-eight million, three hundred ninety-four thousand, two hundred twenty-four".