3016400021 has 8 divisors (see below), whose sum is σ = 3157065024. Its totient is φ = 2876528160.

The previous prime is 3016399973. The next prime is 3016400039. The reversal of 3016400021 is 1200046103.

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 3016400021 - 2¹⁰ = 3016398997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3016403021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190496 + ... + 205721.

It is an arithmetic number, because the mean of its divisors is an integer number (394633128).

Almost surely, 2^3016400021 is an apocalyptic number.

It is an amenable number.

3016400021 is a deficient number, since it is larger than the sum of its proper divisors (140665003).

3016400021 is a wasteful number, since it uses less digits than its factorization.

3016400021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396571.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3016400021 is about 54921.7627266278. The cubic root of 3016400021 is about 1444.8728983882.

Adding to 3016400021 its reverse (1200046103), we get a palindrome (4216446124).

The spelling of 3016400021 in words is "three billion, sixteen million, four hundred thousand, twenty-one".