38667228 has 12 divisors (see below), whose sum is σ = 90223560. Its totient is φ = 12889072.

The previous prime is 38667217. The next prime is 38667259. The reversal of 38667228 is 82276683.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 38667228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1611123 + ... + 1611146.

It is an arithmetic number, because the mean of its divisors is an integer number (7518630).

Almost surely, 2^38667228 is an apocalyptic number.

It is an amenable number.

38667228 is an abundant number, since it is smaller than the sum of its proper divisors (51556332).

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

38667228 is a wasteful number, since it uses less digits than its factorization.

38667228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3222276 (or 3222274 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 38667228 is about 6218.2978378331. The cubic root of 38667228 is about 338.1538578035.

The spelling of 38667228 in words is "thirty-eight million, six hundred sixty-seven thousand, two hundred twenty-eight".