38947392 has 140 divisors (see below), whose sum is σ = 126132336. Its totient is φ = 11784960.

The previous prime is 38947387. The next prime is 38947393. The reversal of 38947392 is 29374983.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (38947393) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 56683 + ... + 57365.

Almost surely, 2^38947392 is an apocalyptic number.

38947392 is a gapful number since it is divisible by the number (32) 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 38947392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63066168).

38947392 is an abundant number, since it is smaller than the sum of its proper divisors (87184944).

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

38947392 is a wasteful number, since it uses less digits than its factorization.

38947392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718 (or 699 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 38947392 is about 6240.7845660622. The cubic root of 38947392 is about 338.9685929083.

The spelling of 38947392 in words is "thirty-eight million, nine hundred forty-seven thousand, three hundred ninety-two".