38347978 has 8 divisors (see below), whose sum is σ = 57674880. Its totient is φ = 19123020.

The previous prime is 38347973. The next prime is 38347979. The reversal of 38347978 is 87974383.

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

It is not an unprimeable number, because it can be changed into a prime (38347973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24538 + ... + 26053.

It is an arithmetic number, because the mean of its divisors is an integer number (7209360).

Almost surely, 2^38347978 is an apocalyptic number.

38347978 is a deficient number, since it is larger than the sum of its proper divisors (19326902).

38347978 is a wasteful number, since it uses less digits than its factorization.

38347978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50972.

The product of its digits is 1016064, while the sum is 49.

The square root of 38347978 is about 6192.5744242601. The cubic root of 38347978 is about 337.2206463879.

The spelling of 38347978 in words is "thirty-eight million, three hundred forty-seven thousand, nine hundred seventy-eight".