38194820 has 12 divisors (see below), whose sum is σ = 80209164. Its totient is φ = 15277920.

The previous prime is 38194813. The next prime is 38194831. The reversal of 38194820 is 2849183.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28472896 + 9721924 = 5336^2 + 3118^2 .

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 3 ways as a sum of consecutive naturals, for example, 954851 + ... + 954890.

It is an arithmetic number, because the mean of its divisors is an integer number (6684097).

Almost surely, 2^38194820 is an apocalyptic number.

It is an amenable number.

38194820 is an abundant number, since it is smaller than the sum of its proper divisors (42014344).

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

38194820 is a wasteful number, since it uses less digits than its factorization.

38194820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909750 (or 1909748 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 38194820 is about 6180.1957897788. The cubic root of 38194820 is about 336.7711055041.

The spelling of 38194820 in words is "thirty-eight million, one hundred ninety-four thousand, eight hundred twenty".