40228728632 has 16 divisors (see below), whose sum is σ = 77467484760. Its totient is φ = 19570732704.

The previous prime is 40228728601. The next prime is 40228728637. The reversal of 40228728632 is 23682782204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40228728637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67953638 + ... + 67954229.

Almost surely, 2^40228728632 is an apocalyptic number.

It is an amenable number.

40228728632 is a deficient number, since it is larger than the sum of its proper divisors (37238756128).

40228728632 is a wasteful number, since it uses less digits than its factorization.

40228728632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135907910 (or 135907906 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 44.

The spelling of 40228728632 in words is "forty billion, two hundred twenty-eight million, seven hundred twenty-eight thousand, six hundred thirty-two".