38189340 has 96 divisors (see below), whose sum is σ = 135797760. Its totient is φ = 8728128.

The previous prime is 38189329. The next prime is 38189341. The reversal of 38189340 is 4398183.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 38189295 and 38189304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38189341) 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, 1272 + ... + 8831.

It is an arithmetic number, because the mean of its divisors is an integer number (1414560).

Almost surely, 2^38189340 is an apocalyptic number.

38189340 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 38189340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67898880).

38189340 is an abundant number, since it is smaller than the sum of its proper divisors (97608420).

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

38189340 is a wasteful number, since it uses less digits than its factorization.

38189340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10128 (or 10120 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 38189340 is about 6179.7524222253. The cubic root of 38189340 is about 336.7549986609.

The spelling of 38189340 in words is "thirty-eight million, one hundred eighty-nine thousand, three hundred forty".