38430978 has 8 divisors (see below), whose sum is σ = 76861968. Its totient is φ = 12810324.

The previous prime is 38430971. The next prime is 38430983. The reversal of 38430978 is 87903483.

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

38430978 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38430971) 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, 3202576 + ... + 3202587.

It is an arithmetic number, because the mean of its divisors is an integer number (9607746).

Almost surely, 2^38430978 is an apocalyptic number.

38430978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

38430978 is a wasteful number, since it uses less digits than its factorization.

38430978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6405168.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 38430978 is about 6199.2723766584. The cubic root of 38430978 is about 337.4637634620.

The spelling of 38430978 in words is "thirty-eight million, four hundred thirty thousand, nine hundred seventy-eight".