38198040 has 64 divisors (see below), whose sum is σ = 116328960. Its totient is φ = 10032000.

The previous prime is 38198033. The next prime is 38198047. The reversal of 38198040 is 4089183.

It is an interprime number because it is at equal distance from previous prime (38198033) and next prime (38198047).

It is a junction number, because it is equal to n+sod(n) for n = 38197992 and 38198010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38198047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5665 + ... + 10415.

It is an arithmetic number, because the mean of its divisors is an integer number (1817640).

Almost surely, 2^38198040 is an apocalyptic number.

38198040 is a gapful number since it is divisible by the number (30) 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 38198040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58164480).

38198040 is an abundant number, since it is smaller than the sum of its proper divisors (78130920).

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

38198040 is a wasteful number, since it uses less digits than its factorization.

38198040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4832 (or 4828 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 38198040 is about 6180.4562938346. The cubic root of 38198040 is about 336.7805690255.

The spelling of 38198040 in words is "thirty-eight million, one hundred ninety-eight thousand, forty".