38221970 has 16 divisors (see below), whose sum is σ = 69966720. Its totient is φ = 15029424.

The previous prime is 38221921. The next prime is 38221979. The reversal of 38221970 is 7912283.

It is not an unprimeable number, because it can be changed into a prime (38221979) 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 7 ways as a sum of consecutive naturals, for example, 31802 + ... + 32981.

It is an arithmetic number, because the mean of its divisors is an integer number (4372920).

Almost surely, 2^38221970 is an apocalyptic number.

38221970 is a deficient number, since it is larger than the sum of its proper divisors (31744750).

38221970 is a wasteful number, since it uses less digits than its factorization.

38221970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64849.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 38221970 is about 6182.3919319306. The cubic root of 38221970 is about 336.8508822026.

The spelling of 38221970 in words is "thirty-eight million, two hundred twenty-one thousand, nine hundred seventy".