38642427 has 20 divisors (see below), whose sum is σ = 57925120. Its totient is φ = 25672464.

The previous prime is 38642419. The next prime is 38642449. The reversal of 38642427 is 72424683.

38642427 is a `hidden beast` number, since 3 + 8 + 642 + 4 + 2 + 7 = 666.

It is not a de Polignac number, because 38642427 - 2³ = 38642419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38642391 and 38642400.

It is not an unprimeable number, because it can be changed into a prime (38642927) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 29574 + ... + 30852.

It is an arithmetic number, because the mean of its divisors is an integer number (2896256).

Almost surely, 2^38642427 is an apocalyptic number.

38642427 is a deficient number, since it is larger than the sum of its proper divisors (19282693).

38642427 is a wasteful number, since it uses less digits than its factorization.

38642427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664 (or 1655 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 38642427 is about 6216.3033227152. The cubic root of 38642427 is about 338.0815455128.

The spelling of 38642427 in words is "thirty-eight million, six hundred forty-two thousand, four hundred twenty-seven".