38447472 has 160 divisors (see below), whose sum is σ = 123420672. Its totient is φ = 10063872.

The previous prime is 38447447. The next prime is 38447491. The reversal of 38447472 is 27474483.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 38447472.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 302673 + ... + 302799.

Almost surely, 2^38447472 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 38447472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61710336).

38447472 is an abundant number, since it is smaller than the sum of its proper divisors (84973200).

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

38447472 is a wasteful number, since it uses less digits than its factorization.

38447472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 209 counting only the distinct ones).

The product of its digits is 150528, while the sum is 39.

The square root of 38447472 is about 6200.6025513655. The cubic root of 38447472 is about 337.5120346875.

The spelling of 38447472 in words is "thirty-eight million, four hundred forty-seven thousand, four hundred seventy-two".