40228652640 has 192 divisors, whose sum is σ = 138394448640. Its totient is φ = 9741527040.

The previous prime is 40228652549. The next prime is 40228652641. The reversal of 40228652640 is 4625682204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40228652641) 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, 5376582 + ... + 5384058.

It is an arithmetic number, because the mean of its divisors is an integer number (720804420).

Almost surely, 2^40228652640 is an apocalyptic number.

40228652640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40228652640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69197224320).

40228652640 is an abundant number, since it is smaller than the sum of its proper divisors (98165796000).

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

40228652640 is a wasteful number, since it uses less digits than its factorization.

40228652640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8525 (or 8517 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 39.

The spelling of 40228652640 in words is "forty billion, two hundred twenty-eight million, six hundred fifty-two thousand, six hundred forty".