38717970 has 32 divisors (see below), whose sum is σ = 96964992. Its totient is φ = 9875712.

The previous prime is 38717963. The next prime is 38717971. The reversal of 38717970 is 7971783.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (38717971) 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, 27367 + ... + 28746.

It is an arithmetic number, because the mean of its divisors is an integer number (3030156).

Almost surely, 2^38717970 is an apocalyptic number.

38717970 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38717970 is an abundant number, since it is smaller than the sum of its proper divisors (58247022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38717970 is a wasteful number, since it uses less digits than its factorization.

38717970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56146.

The product of its (nonzero) digits is 74088, while the sum is 42.

The square root of 38717970 is about 6222.3765556257. The cubic root of 38717970 is about 338.3017099927.

The spelling of 38717970 in words is "thirty-eight million, seven hundred seventeen thousand, nine hundred seventy".