38705420 has 24 divisors (see below), whose sum is σ = 87534384. Its totient is φ = 14291136.

The previous prime is 38705417. The next prime is 38705449. The reversal of 38705420 is 2450783.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 74174 + ... + 74693.

It is an arithmetic number, because the mean of its divisors is an integer number (3647266).

Almost surely, 2^38705420 is an apocalyptic number.

It is an amenable number.

38705420 is an abundant number, since it is smaller than the sum of its proper divisors (48828964).

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

38705420 is a wasteful number, since it uses less digits than its factorization.

38705420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148889 (or 148887 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 38705420 is about 6221.3680167629. The cubic root of 38705420 is about 338.2651537952.

The spelling of 38705420 in words is "thirty-eight million, seven hundred five thousand, four hundred twenty".