4081616 has 40 divisors (see below), whose sum is σ = 9862464. Its totient is φ = 1589760.

The previous prime is 4081613. The next prime is 4081657. The reversal of 4081616 is 6161804.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4081613) 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, 425 + ... + 2888.

Almost surely, 2^4081616 is an apocalyptic number.

It is an amenable number.

4081616 is an abundant number, since it is smaller than the sum of its proper divisors (5780848).

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

4081616 is a wasteful number, since it uses less digits than its factorization.

4081616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3339 (or 3333 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 4081616 is about 2020.3009676778. The cubic root of 4081616 is about 159.8124886661.

The spelling of 4081616 in words is "four million, eighty-one thousand, six hundred sixteen".