38391330 has 32 divisors (see below), whose sum is σ = 95113728. Its totient is φ = 9907200.

The previous prime is 38391329. The next prime is 38391341. The reversal of 38391330 is 3319383.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 19711 + ... + 21570.

It is an arithmetic number, because the mean of its divisors is an integer number (2972304).

Almost surely, 2^38391330 is an apocalyptic number.

38391330 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38391330 is an abundant number, since it is smaller than the sum of its proper divisors (56722398).

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

38391330 is a wasteful number, since it uses less digits than its factorization.

38391330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41322.

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 38391330 is about 6196.0737568238. The cubic root of 38391330 is about 337.3476733720.

The spelling of 38391330 in words is "thirty-eight million, three hundred ninety-one thousand, three hundred thirty".