3871516 has 36 divisors (see below), whose sum is σ = 7857640. Its totient is φ = 1663200.

The previous prime is 3871501. The next prime is 3871523. The reversal of 3871516 is 6151783.

3871516 = 18² + 19² + ... + 226².

3871516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3871516² = 29977272276512, which contains 22 as substring.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 8986 + ... + 9406.

Almost surely, 2^3871516 is an apocalyptic number.

It is an amenable number.

3871516 is an abundant number, since it is smaller than the sum of its proper divisors (3986124).

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

3871516 is a wasteful number, since it uses less digits than its factorization.

3871516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466 (or 453 counting only the distinct ones).

The product of its digits is 5040, while the sum is 31.

The square root of 3871516 is about 1967.6168326176. The cubic root of 3871516 is about 157.0219450845.

The spelling of 3871516 in words is "three million, eight hundred seventy-one thousand, five hundred sixteen".