38478861 has 24 divisors (see below), whose sum is σ = 58106880. Its totient is φ = 25166160.

The previous prime is 38478859. The next prime is 38478863. The reversal of 38478861 is 16887483.

It is an interprime number because it is at equal distance from previous prime (38478859) and next prime (38478863).

It is not a de Polignac number, because 38478861 - 2¹ = 38478859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38478863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100276 + ... + 100658.

It is an arithmetic number, because the mean of its divisors is an integer number (2421120).

Almost surely, 2^38478861 is an apocalyptic number.

It is an amenable number.

38478861 is a deficient number, since it is larger than the sum of its proper divisors (19628019).

38478861 is an equidigital number, since it uses as much as digits as its factorization.

38478861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514 (or 447 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 38478861 is about 6203.1331599443. The cubic root of 38478861 is about 337.6038593939.

The spelling of 38478861 in words is "thirty-eight million, four hundred seventy-eight thousand, eight hundred sixty-one".