2215642 has 32 divisors (see below), whose sum is σ = 3999744. Its totient is φ = 907200.

The previous prime is 2215639. The next prime is 2215651. The reversal of 2215642 is 2465122.

It is a super-3 number, since 3×2215642³ = 32630221510333167864, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a d-powerful number, because it can be written as 2⁶ + 2⁸ + 1 + 5⁹ + 6² + 4² + 2¹⁸ .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17383 + ... + 17509.

It is an arithmetic number, because the mean of its divisors is an integer number (124992).

2^2215642 is an apocalyptic number.

2215642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2215642 is a deficient number, since it is larger than the sum of its proper divisors (1784102).

2215642 is a wasteful number, since it uses less digits than its factorization.

2215642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214.

The product of its digits is 960, while the sum is 22.

The square root of 2215642 is about 1488.5032751056. The cubic root of 2215642 is about 130.3666572008.

The spelling of 2215642 in words is "two million, two hundred fifteen thousand, six hundred forty-two".