2216742 has 16 divisors (see below), whose sum is σ = 4836672. Its totient is φ = 671720.

The previous prime is 2216729. The next prime is 2216743. The reversal of 2216742 is 2476122.

It is a d-powerful number, because it can be written as 2⁷ + 2⁹ + 1 + 6⁴ + 7⁶ + 4 + 2²¹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216743) 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, 16728 + ... + 16859.

It is an arithmetic number, because the mean of its divisors is an integer number (302292).

2^2216742 is an apocalyptic number.

2216742 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2216742 is an abundant number, since it is smaller than the sum of its proper divisors (2619930).

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

2216742 is a wasteful number, since it uses less digits than its factorization.

2216742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33603.

The product of its digits is 1344, while the sum is 24.

The square root of 2216742 is about 1488.8727279388. The cubic root of 2216742 is about 130.3882280138.

The spelling of 2216742 in words is "two million, two hundred sixteen thousand, seven hundred forty-two".