38820378 has 32 divisors (see below), whose sum is σ = 79238016. Its totient is φ = 12676608.

The previous prime is 38820377. The next prime is 38820493. The reversal of 38820378 is 87302883.

It is a happy number.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (38820373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115026 + ... + 115362.

It is an arithmetic number, because the mean of its divisors is an integer number (2476188).

Almost surely, 2^38820378 is an apocalyptic number.

38820378 is an abundant number, since it is smaller than the sum of its proper divisors (40417638).

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

38820378 is a wasteful number, since it uses less digits than its factorization.

38820378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 38820378 is about 6230.6001316085. The cubic root of 38820378 is about 338.5997137487.

The spelling of 38820378 in words is "thirty-eight million, eight hundred twenty thousand, three hundred seventy-eight".