7488821 has 4 divisors (see below), whose sum is σ = 7561632. Its totient is φ = 7416012.

The previous prime is 7488797. The next prime is 7488829. The reversal of 7488821 is 1288847.

It is a happy number.

7488821 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7488821 - 2¹⁰ = 7487797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7488829) 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 3 ways as a sum of consecutive naturals, for example, 36251 + ... + 36456.

It is an arithmetic number, because the mean of its divisors is an integer number (1890408).

Almost surely, 2^7488821 is an apocalyptic number.

It is an amenable number.

7488821 is a deficient number, since it is larger than the sum of its proper divisors (72811).

7488821 is a wasteful number, since it uses less digits than its factorization.

7488821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72810.

The product of its digits is 28672, while the sum is 38.

The square root of 7488821 is about 2736.5710295916. The cubic root of 7488821 is about 195.6460796864.

The spelling of 7488821 in words is "seven million, four hundred eighty-eight thousand, eight hundred twenty-one".