38207420 has 24 divisors (see below), whose sum is σ = 81435984. Its totient is φ = 15054336.

The previous prime is 38207401. The next prime is 38207431. The reversal of 38207420 is 2470283.

It is a self number, because there is not a number n which added to its sum of digits gives 38207420.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12917 + ... + 15596.

It is an arithmetic number, because the mean of its divisors is an integer number (3393166).

Almost surely, 2^38207420 is an apocalyptic number.

It is an amenable number.

38207420 is an abundant number, since it is smaller than the sum of its proper divisors (43228564).

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

38207420 is a wasteful number, since it uses less digits than its factorization.

38207420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28589 (or 28587 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 38207420 is about 6181.2150909024. The cubic root of 38207420 is about 336.8081336439.

The spelling of 38207420 in words is "thirty-eight million, two hundred seven thousand, four hundred twenty".