38128906 has 8 divisors (see below), whose sum is σ = 57324960. Its totient is φ = 19020588.

The previous prime is 38128903. The next prime is 38128913. The reversal of 38128906 is 60982183.

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

It is not an unprimeable number, because it can be changed into a prime (38128901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20836 + ... + 22591.

It is an arithmetic number, because the mean of its divisors is an integer number (7165620).

Almost surely, 2^38128906 is an apocalyptic number.

38128906 is a deficient number, since it is larger than the sum of its proper divisors (19196054).

38128906 is a wasteful number, since it uses less digits than its factorization.

38128906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43868.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 38128906 is about 6174.8608081478. The cubic root of 38128906 is about 336.5772684678.

The spelling of 38128906 in words is "thirty-eight million, one hundred twenty-eight thousand, nine hundred six".