38642145 has 16 divisors (see below), whose sum is σ = 62188992. Its totient is φ = 20488640.

The previous prime is 38642137. The next prime is 38642159. The reversal of 38642145 is 54124683.

It is not a de Polignac number, because 38642145 - 2³ = 38642137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4851 + ... + 10040.

It is an arithmetic number, because the mean of its divisors is an integer number (3886812).

Almost surely, 2^38642145 is an apocalyptic number.

It is an amenable number.

38642145 is a deficient number, since it is larger than the sum of its proper divisors (23546847).

38642145 is a wasteful number, since it uses less digits than its factorization.

38642145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15072.

The product of its digits is 23040, while the sum is 33.

The square root of 38642145 is about 6216.2806403830. The cubic root of 38642145 is about 338.0807231073.

The spelling of 38642145 in words is "thirty-eight million, six hundred forty-two thousand, one hundred forty-five".