38028145 has 8 divisors (see below), whose sum is σ = 45688104. Its totient is φ = 30386304.

The previous prime is 38028143. The next prime is 38028169. The reversal of 38028145 is 54182083.

It can be written as a sum of positive squares in 4 ways, for example, as 2934369 + 35093776 = 1713^2 + 5924^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38028145 - 2¹ = 38028143 is a prime.

It is a super-2 number, since 2×38028145² = 2892279624282050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38028143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 627 + ... + 8743.

It is an arithmetic number, because the mean of its divisors is an integer number (5711013).

Almost surely, 2^38028145 is an apocalyptic number.

It is an amenable number.

38028145 is a deficient number, since it is larger than the sum of its proper divisors (7659959).

38028145 is an equidigital number, since it uses as much as digits as its factorization.

38028145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9059.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 38028145 is about 6166.6964413696. The cubic root of 38028145 is about 336.2805226504.

The spelling of 38028145 in words is "thirty-eight million, twenty-eight thousand, one hundred forty-five".