38820451 has 8 divisors (see below), whose sum is σ = 39501200. Its totient is φ = 38143872.

The previous prime is 38820377. The next prime is 38820493. The reversal of 38820451 is 15402883.

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 38820451 - 2⁹ = 38819939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38820151) 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 7 ways as a sum of consecutive naturals, for example, 22000 + ... + 23698.

It is an arithmetic number, because the mean of its divisors is an integer number (4937650).

Almost surely, 2^38820451 is an apocalyptic number.

38820451 is a deficient number, since it is larger than the sum of its proper divisors (680749).

38820451 is a wasteful number, since it uses less digits than its factorization.

38820451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085.

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

The square root of 38820451 is about 6230.6059897894. The cubic root of 38820451 is about 338.5999259892.

The spelling of 38820451 in words is "thirty-eight million, eight hundred twenty thousand, four hundred fifty-one".