38642465 has 8 divisors (see below), whose sum is σ = 46892520. Its totient is φ = 30566272.

The previous prime is 38642453. The next prime is 38642473. The reversal of 38642465 is 56424683.

It can be written as a sum of positive squares in 4 ways, for example, as 3489424 + 35153041 = 1868^2 + 5929^2 .

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 38642465 - 2⁴ = 38642449 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 42974 + ... + 43863.

It is an arithmetic number, because the mean of its divisors is an integer number (5861565).

Almost surely, 2^38642465 is an apocalyptic number.

It is an amenable number.

38642465 is a deficient number, since it is larger than the sum of its proper divisors (8250055).

38642465 is an equidigital number, since it uses as much as digits as its factorization.

38642465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86931.

The product of its digits is 138240, while the sum is 38.

The square root of 38642465 is about 6216.3063791934. The cubic root of 38642465 is about 338.0816563331.

It can be divided in two parts, 3 and 8642465, that added together give a palindrome (8642468).

The spelling of 38642465 in words is "thirty-eight million, six hundred forty-two thousand, four hundred sixty-five".