38521330 has 8 divisors (see below), whose sum is σ = 69338412. Its totient is φ = 15408528.

The previous prime is 38521321. The next prime is 38521333. The reversal of 38521330 is 3312583.

It can be written as a sum of positive squares in 2 ways, for example, as 37173409 + 1347921 = 6097^2 + 1161^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 38521295 and 38521304.

It is not an unprimeable number, because it can be changed into a prime (38521333) 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, 1926057 + ... + 1926076.

Almost surely, 2^38521330 is an apocalyptic number.

38521330 is a deficient number, since it is larger than the sum of its proper divisors (30817082).

38521330 is a wasteful number, since it uses less digits than its factorization.

38521330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3852140.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 38521330 is about 6206.5554053758. Note that the first 3 decimals coincide. The cubic root of 38521330 is about 337.7280178395.

The spelling of 38521330 in words is "thirty-eight million, five hundred twenty-one thousand, three hundred thirty".