38939472 has 240 divisors, whose sum is σ = 134324736. Its totient is φ = 10368000.

The previous prime is 38939449. The next prime is 38939473. The reversal of 38939472 is 27493983.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38939473) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 638322 + ... + 638382.

Almost surely, 2^38939472 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 38939472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67162368).

38939472 is an abundant number, since it is smaller than the sum of its proper divisors (95385264).

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

38939472 is a wasteful number, since it uses less digits than its factorization.

38939472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 121 counting only the distinct ones).

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

The square root of 38939472 is about 6240.1499981972. The cubic root of 38939472 is about 338.9456147908.

The spelling of 38939472 in words is "thirty-eight million, nine hundred thirty-nine thousand, four hundred seventy-two".