38786420 has 24 divisors (see below), whose sum is σ = 82295304. Its totient is φ = 15353856.

The previous prime is 38786413. The next prime is 38786431. The reversal of 38786420 is 2468783.

It can be written as a sum of positive squares in 4 ways, for example, as 4376464 + 34409956 = 2092^2 + 5866^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8057 + ... + 11936.

It is an arithmetic number, because the mean of its divisors is an integer number (3428971).

Almost surely, 2^38786420 is an apocalyptic number.

It is an amenable number.

38786420 is an abundant number, since it is smaller than the sum of its proper divisors (43508884).

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

38786420 is a wasteful number, since it uses less digits than its factorization.

38786420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20099 (or 20097 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 38786420 is about 6227.8744367561. The cubic root of 38786420 is about 338.5009552791.

The spelling of 38786420 in words is "thirty-eight million, seven hundred eighty-six thousand, four hundred twenty".