38428272 has 30 divisors (see below), whose sum is σ = 107546192. Its totient is φ = 12809376.

The previous prime is 38428223. The next prime is 38428289. The reversal of 38428272 is 27282483.

38428272 is a `hidden beast` number, since 384 + 2 + 8 + 272 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 133288 + ... + 133575.

Almost surely, 2^38428272 is an apocalyptic number.

It is an amenable number.

38428272 is an abundant number, since it is smaller than the sum of its proper divisors (69117920).

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

38428272 is a wasteful number, since it uses less digits than its factorization.

38428272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266877 (or 266868 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 38428272 is about 6199.0541213963. The cubic root of 38428272 is about 337.4558427826.

The spelling of 38428272 in words is "thirty-eight million, four hundred twenty-eight thousand, two hundred seventy-two".