38403650252240 has 160 divisors (see below), whose sum is σ = 109901769169920. Its totient is φ = 12153210181632.

The previous prime is 38403650252237. The next prime is 38403650252249. The reversal of 38403650252240 is 4225205630483.

It is a junction number, because it is equal to n+sod(n) for n = 38403650252191 and 38403650252200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38403650252249) 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, 100323926 + ... + 100705994.

It is an arithmetic number, because the mean of its divisors is an integer number (686886057312).

Almost surely, 2^{38403650252240} 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 38403650252240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54950884584960).

38403650252240 is an abundant number, since it is smaller than the sum of its proper divisors (71498118917680).

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

38403650252240 is a wasteful number, since it uses less digits than its factorization.

38403650252240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395909 (or 395903 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 44.

The spelling of 38403650252240 in words is "thirty-eight trillion, four hundred three billion, six hundred fifty million, two hundred fifty-two thousand, two hundred forty".