38347812 has 18 divisors (see below), whose sum is σ = 96934838. Its totient is φ = 12782592.

The previous prime is 38347811. The next prime is 38347819. The reversal of 38347812 is 21874383.

It can be written as a sum of positive squares in only one way, i.e., 37748736 + 599076 = 6144^2 + 774^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1065217 = 38347812 / (3 + 8 + 3 + 4 + 7 + 8 + 1 + 2).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (38347811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 532573 + ... + 532644.

Almost surely, 2^38347812 is an apocalyptic number.

It is an amenable number.

38347812 is an abundant number, since it is smaller than the sum of its proper divisors (58587026).

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

38347812 is a wasteful number, since it uses less digits than its factorization.

38347812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065227 (or 1065222 counting only the distinct ones).

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

The square root of 38347812 is about 6192.5610210962. The cubic root of 38347812 is about 337.2201598025.

The spelling of 38347812 in words is "thirty-eight million, three hundred forty-seven thousand, eight hundred twelve".