38670421 has 8 divisors (see below), whose sum is σ = 40118400. Its totient is φ = 37246560.

The previous prime is 38670419. The next prime is 38670431. The reversal of 38670421 is 12407683.

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

It is a cyclic number.

It is not a de Polignac number, because 38670421 - 2¹ = 38670419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38670431) 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, 2731 + ... + 9208.

It is an arithmetic number, because the mean of its divisors is an integer number (5014800).

Almost surely, 2^38670421 is an apocalyptic number.

It is an amenable number.

38670421 is a deficient number, since it is larger than the sum of its proper divisors (1447979).

38670421 is a wasteful number, since it uses less digits than its factorization.

38670421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12059.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 38670421 is about 6218.5545748188. The cubic root of 38670421 is about 338.1631653887.

It can be divided in two parts, 386 and 70421, that added together give a palindrome (70807).

The spelling of 38670421 in words is "thirty-eight million, six hundred seventy thousand, four hundred twenty-one".