38720427 has 8 divisors (see below), whose sum is σ = 51689616. Its totient is φ = 25782432.

The previous prime is 38720417. The next prime is 38720443. The reversal of 38720427 is 72402783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38720427 - 2¹⁸ = 38458283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38720417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4728 + ... + 9989.

It is an arithmetic number, because the mean of its divisors is an integer number (6461202).

Almost surely, 2^38720427 is an apocalyptic number.

38720427 is a deficient number, since it is larger than the sum of its proper divisors (12969189).

38720427 is a wasteful number, since it uses less digits than its factorization.

38720427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15597.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 38720427 is about 6222.5739850965. The cubic root of 38720427 is about 338.3088659267.

The spelling of 38720427 in words is "thirty-eight million, seven hundred twenty thousand, four hundred twenty-seven".