38728125 has 84 divisors (see below), whose sum is σ = 76846644. Its totient is φ = 19440000.

The previous prime is 38728121. The next prime is 38728127. The reversal of 38728125 is 52182783.

It can be written as a sum of positive squares in 6 ways, for example, as 27154521 + 11573604 = 5211^2 + 3402^2 .

It is not a de Polignac number, because 38728125 - 2² = 38728121 is a prime.

Its product of digits (26880) is a multiple of the sum of its prime factors (60).

It is a self number, because there is not a number n which added to its sum of digits gives 38728125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38728121) by changing a digit.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 2278117 + ... + 2278133.

It is an arithmetic number, because the mean of its divisors is an integer number (914841).

Almost surely, 2^38728125 is an apocalyptic number.

It is an amenable number.

38728125 is a deficient number, since it is larger than the sum of its proper divisors (38118519).

38728125 is an frugal number, since it uses more digits than its factorization.

38728125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60 (or 25 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 38728125 is about 6223.1925086727. The cubic root of 38728125 is about 338.3312841461.

The spelling of 38728125 in words is "thirty-eight million, seven hundred twenty-eight thousand, one hundred twenty-five".