4016820 has 24 divisors (see below), whose sum is σ = 11247264. Its totient is φ = 1071136.

The previous prime is 4016801. The next prime is 4016827. The reversal of 4016820 is 286104.

It is a super-2 number, since 2×4016820² = 32269685824800, which contains 22 as substring.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4016827) 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, 33414 + ... + 33533.

It is an arithmetic number, because the mean of its divisors is an integer number (468636).

Almost surely, 2^4016820 is an apocalyptic number.

It is an amenable number.

4016820 is an abundant number, since it is smaller than the sum of its proper divisors (7230444).

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

4016820 is a wasteful number, since it uses less digits than its factorization.

4016820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66959 (or 66957 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 4016820 is about 2004.2005887635. The cubic root of 4016820 is about 158.9622947656.

The spelling of 4016820 in words is "four million, sixteen thousand, eight hundred twenty".