4001216 has 28 divisors (see below), whose sum is σ = 8031480. Its totient is φ = 1977600.

The previous prime is 4001213. The next prime is 4001219. The reversal of 4001216 is 6121004.

It is an interprime number because it is at equal distance from previous prime (4001213) and next prime (4001219).

It is a self number, because there is not a number n which added to its sum of digits gives 4001216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6155 + ... + 6773.

Almost surely, 2^4001216 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 4001216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4015740).

4001216 is an abundant number, since it is smaller than the sum of its proper divisors (4030264).

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

4001216 is a wasteful number, since it uses less digits than its factorization.

4001216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 4001216 is about 2000.3039768995. The cubic root of 4001216 is about 158.7561892311.

The spelling of 4001216 in words is "four million, one thousand, two hundred sixteen".