7131648 has 40 divisors (see below), whose sum is σ = 19003248. Its totient is φ = 2376704.

The previous prime is 7131647. The next prime is 7131661. The reversal of 7131648 is 8461317.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (7131647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 786 + ... + 3857.

Almost surely, 2^7131648 is an apocalyptic number.

It is an amenable number.

7131648 is an abundant number, since it is smaller than the sum of its proper divisors (11871600).

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

7131648 is an equidigital number, since it uses as much as digits as its factorization.

7131648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4664 (or 4648 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 7131648 is about 2670.5145571594. The cubic root of 7131648 is about 192.4848855283.

The spelling of 7131648 in words is "seven million, one hundred thirty-one thousand, six hundred forty-eight".