38830905 has 12 divisors (see below), whose sum is σ = 67306980. Its totient is φ = 20709792.

The previous prime is 38830903. The next prime is 38830919. The reversal of 38830905 is 50903883.

It can be written as a sum of positive squares in 2 ways, for example, as 4678569 + 34152336 = 2163^2 + 5844^2 .

It is not a de Polignac number, because 38830905 - 2¹ = 38830903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38830905.

It is not an unprimeable number, because it can be changed into a prime (38830903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 431410 + ... + 431499.

It is an arithmetic number, because the mean of its divisors is an integer number (5608915).

Almost surely, 2^38830905 is an apocalyptic number.

It is an amenable number.

38830905 is a deficient number, since it is larger than the sum of its proper divisors (28476075).

38830905 is a wasteful number, since it uses less digits than its factorization.

38830905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862920 (or 862917 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 38830905 is about 6231.4448565321. Note that the first 3 decimals coincide. The cubic root of 38830905 is about 338.6303172378.

The spelling of 38830905 in words is "thirty-eight million, eight hundred thirty thousand, nine hundred five".