38642270 has 16 divisors (see below), whose sum is σ = 69660000. Its totient is φ = 15433824.

The previous prime is 38642269. The next prime is 38642273. The reversal of 38642270 is 7224683.

38642270 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38642273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5231 + ... + 10229.

It is an arithmetic number, because the mean of its divisors is an integer number (4353750).

Almost surely, 2^38642270 is an apocalyptic number.

38642270 is a deficient number, since it is larger than the sum of its proper divisors (31017730).

38642270 is a wasteful number, since it uses less digits than its factorization.

38642270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5779.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 38642270 is about 6216.2906946185. The cubic root of 38642270 is about 338.0810876493.

The spelling of 38642270 in words is "thirty-eight million, six hundred forty-two thousand, two hundred seventy".