7628889 has 8 divisors (see below), whose sum is σ = 10234912. Its totient is φ = 5054400.

The previous prime is 7628867. The next prime is 7628897. The reversal of 7628889 is 9888267.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7628889 - 2⁹ = 7628377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7628809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7312 + ... + 8289.

It is an arithmetic number, because the mean of its divisors is an integer number (1279364).

Almost surely, 2^7628889 is an apocalyptic number.

It is an amenable number.

7628889 is a deficient number, since it is larger than the sum of its proper divisors (2606023).

7628889 is a wasteful number, since it uses less digits than its factorization.

7628889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15767.

The product of its digits is 387072, while the sum is 48.

The square root of 7628889 is about 2762.0443515628. The cubic root of 7628889 is about 196.8583158449.

The spelling of 7628889 in words is "seven million, six hundred twenty-eight thousand, eight hundred eighty-nine".