38145272 has 16 divisors (see below), whose sum is σ = 78024600. Its totient is φ = 17338720.

The previous prime is 38145271. The next prime is 38145277. The reversal of 38145272 is 27254183.

It is a super-3 number, since 3×38145272³ (a number of 24 digits) contains 333 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38145271) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 216647 + ... + 216822.

Almost surely, 2^38145272 is an apocalyptic number.

It is an amenable number.

38145272 is an abundant number, since it is smaller than the sum of its proper divisors (39879328).

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

38145272 is a wasteful number, since it uses less digits than its factorization.

38145272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433486 (or 433482 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 38145272 is about 6176.1858780318. The cubic root of 38145272 is about 336.6254177262.

The spelling of 38145272 in words is "thirty-eight million, one hundred forty-five thousand, two hundred seventy-two".