7894144 has 16 divisors (see below), whose sum is σ = 15726870. Its totient is φ = 3947008.

The previous prime is 7894127. The next prime is 7894153. The reversal of 7894144 is 4414987.

It can be written as a sum of positive squares in only one way, i.e., 4359744 + 3534400 = 2088^2 + 1880^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30709 + ... + 30964.

Almost surely, 2^7894144 is an apocalyptic number.

It is an amenable number.

7894144 is a deficient number, since it is larger than the sum of its proper divisors (7832726).

7894144 is an equidigital number, since it uses as much as digits as its factorization.

7894144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61687 (or 61675 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 7894144 is about 2809.6519357387. The cubic root of 7894144 is about 199.1139470141.

The spelling of 7894144 in words is "seven million, eight hundred ninety-four thousand, one hundred forty-four".