38728437 has 8 divisors (see below), whose sum is σ = 56332320. Its totient is φ = 23471760.

The previous prime is 38728433. The next prime is 38728453. The reversal of 38728437 is 73482783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38728437 - 2² = 38728433 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38728433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 586762 + ... + 586827.

It is an arithmetic number, because the mean of its divisors is an integer number (7041540).

Almost surely, 2^38728437 is an apocalyptic number.

It is an amenable number.

38728437 is a deficient number, since it is larger than the sum of its proper divisors (17603883).

38728437 is a wasteful number, since it uses less digits than its factorization.

38728437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173603.

The product of its digits is 225792, while the sum is 42.

The square root of 38728437 is about 6223.2175761418. The cubic root of 38728437 is about 338.3321926941.

The spelling of 38728437 in words is "thirty-eight million, seven hundred twenty-eight thousand, four hundred thirty-seven".