38709340 has 48 divisors (see below), whose sum is σ = 86601312. Its totient is φ = 14483456.

The previous prime is 38709337. The next prime is 38709343. The reversal of 38709340 is 4390783.

It is an interprime number because it is at equal distance from previous prime (38709337) and next prime (38709343).

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 38709296 and 38709305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38709343) 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, 87159 + ... + 87601.

It is an arithmetic number, because the mean of its divisors is an integer number (1804194).

Almost surely, 2^38709340 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 38709340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43300656).

38709340 is an abundant number, since it is smaller than the sum of its proper divisors (47891972).

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

38709340 is a wasteful number, since it uses less digits than its factorization.

38709340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 38709340 is about 6221.6830520366. The cubic root of 38709340 is about 338.2765729938.

The spelling of 38709340 in words is "thirty-eight million, seven hundred nine thousand, three hundred forty".