38905970 has 32 divisors (see below), whose sum is σ = 72211392. Its totient is φ = 15083712.

The previous prime is 38905969. The next prime is 38905973. The reversal of 38905970 is 7950983.

It is not an unprimeable number, because it can be changed into a prime (38905973) 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 15 ways as a sum of consecutive naturals, for example, 74129 + ... + 74651.

It is an arithmetic number, because the mean of its divisors is an integer number (2256606).

Almost surely, 2^38905970 is an apocalyptic number.

38905970 is a deficient number, since it is larger than the sum of its proper divisors (33305422).

38905970 is a wasteful number, since it uses less digits than its factorization.

38905970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 38905970 is about 6237.4650299621. The cubic root of 38905970 is about 338.8483817132.

The spelling of 38905970 in words is "thirty-eight million, nine hundred five thousand, nine hundred seventy".