38870145 has 32 divisors (see below), whose sum is σ = 69955200. Its totient is φ = 20475072.

The previous prime is 38870141. The next prime is 38870171. The reversal of 38870145 is 54107883.

38870145 = T₉₂₆ + T₉₂₇ + ... + T₁₀₀₈.

It is not a de Polignac number, because 38870145 - 2² = 38870141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38870141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9471 + ... + 12939.

It is an arithmetic number, because the mean of its divisors is an integer number (2186100).

Almost surely, 2^38870145 is an apocalyptic number.

It is an amenable number.

38870145 is a deficient number, since it is larger than the sum of its proper divisors (31085055).

38870145 is a wasteful number, since it uses less digits than its factorization.

38870145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3566 (or 3560 counting only the distinct ones).

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

The square root of 38870145 is about 6234.5926089842. The cubic root of 38870145 is about 338.7443447992.

The spelling of 38870145 in words is "thirty-eight million, eight hundred seventy thousand, one hundred forty-five".