3851616 has 48 divisors (see below), whose sum is σ = 10314864. Its totient is φ = 1257984.

The previous prime is 3851611. The next prime is 3851641. The reversal of 3851616 is 6161583.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×3851616² = 29669891622912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3851611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4710 + ... + 5466.

It is an arithmetic number, because the mean of its divisors is an integer number (214893).

Almost surely, 2^3851616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3851616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5157432).

3851616 is an abundant number, since it is smaller than the sum of its proper divisors (6463248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3851616 is a wasteful number, since it uses less digits than its factorization.

3851616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823 (or 815 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 3851616 is about 1962.5534387629. The cubic root of 3851616 is about 156.7524463598.

The spelling of 3851616 in words is "three million, eight hundred fifty-one thousand, six hundred sixteen".