38784213 has 12 divisors (see below), whose sum is σ = 60331180. Its totient is φ = 23867136.

The previous prime is 38784173. The next prime is 38784217. The reversal of 38784213 is 31248783.

It can be written as a sum of positive squares in 2 ways, for example, as 20277009 + 18507204 = 4503^2 + 4302^2 .

It is not a de Polignac number, because 38784213 - 2¹⁴ = 38767829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38784217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 165628 + ... + 165861.

Almost surely, 2^38784213 is an apocalyptic number.

It is an amenable number.

38784213 is a deficient number, since it is larger than the sum of its proper divisors (21546967).

38784213 is a wasteful number, since it uses less digits than its factorization.

38784213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331508 (or 331505 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 38784213 is about 6227.6972469766. The cubic root of 38784213 is about 338.4945347692.

The spelling of 38784213 in words is "thirty-eight million, seven hundred eighty-four thousand, two hundred thirteen".