38978466 has 16 divisors (see below), whose sum is σ = 78052800. Its totient is φ = 12976848.

The previous prime is 38978461. The next prime is 38978477. The reversal of 38978466 is 66487983.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38978461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1980 + ... + 9048.

It is an arithmetic number, because the mean of its divisors is an integer number (4878300).

Almost surely, 2^38978466 is an apocalyptic number.

38978466 is an abundant number, since it is smaller than the sum of its proper divisors (39074334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38978466 is a wasteful number, since it uses less digits than its factorization.

38978466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7993.

The product of its digits is 1741824, while the sum is 51.

The square root of 38978466 is about 6243.2736605086. The cubic root of 38978466 is about 339.0587171288.

The spelling of 38978466 in words is "thirty-eight million, nine hundred seventy-eight thousand, four hundred sixty-six".