38028661902 has 288 divisors, whose sum is σ = 107302680576. Its totient is φ = 9521867520.

The previous prime is 38028661889. The next prime is 38028661943. The reversal of 38028661902 is 20916682083.

38028661902 is a `hidden beast` number, since 3 + 8 + 0 + 28 + 6 + 619 + 0 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 52308663 + ... + 52309389.

It is an arithmetic number, because the mean of its divisors is an integer number (372578752).

Almost surely, 2^38028661902 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38028661902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53651340288).

38028661902 is an abundant number, since it is smaller than the sum of its proper divisors (69274018674).

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

38028661902 is a wasteful number, since it uses less digits than its factorization.

38028661902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884 (or 870 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 38028661902 in words is "thirty-eight billion, twenty-eight million, six hundred sixty-one thousand, nine hundred two".