38430505 has 4 divisors (see below), whose sum is σ = 46116612. Its totient is φ = 30744400.

The previous prime is 38430503. The next prime is 38430517. The reversal of 38430505 is 50503483.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24472809 + 13957696 = 4947^2 + 3736^2 .

It is not a de Polignac number, because 38430505 - 2¹ = 38430503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38430503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3843046 + ... + 3843055.

It is an arithmetic number, because the mean of its divisors is an integer number (11529153).

Almost surely, 2^38430505 is an apocalyptic number.

It is an amenable number.

38430505 is a deficient number, since it is larger than the sum of its proper divisors (7686107).

38430505 is an equidigital number, since it uses as much as digits as its factorization.

38430505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7686106.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 38430505 is about 6199.2342269025. The cubic root of 38430505 is about 337.4623789798.

Adding to 38430505 its reverse (50503483), we get a palindrome (88933988).

The spelling of 38430505 in words is "thirty-eight million, four hundred thirty thousand, five hundred five".