38142247 has 16 divisors (see below), whose sum is σ = 45859968. Its totient is φ = 31258080.

The previous prime is 38142241. The next prime is 38142289. The reversal of 38142247 is 74224183.

It is a cyclic number.

It is not a de Polignac number, because 38142247 - 2¹⁵ = 38109479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38142241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3048 + ... + 9250.

It is an arithmetic number, because the mean of its divisors is an integer number (2866248).

Almost surely, 2^38142247 is an apocalyptic number.

38142247 is a deficient number, since it is larger than the sum of its proper divisors (7717721).

38142247 is a wasteful number, since it uses less digits than its factorization.

38142247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6270.

The product of its digits is 10752, while the sum is 31.

The square root of 38142247 is about 6175.9409809356. The cubic root of 38142247 is about 336.6165191240.

The spelling of 38142247 in words is "thirty-eight million, one hundred forty-two thousand, two hundred forty-seven".