7720896 has 28 divisors (see below), whose sum is σ = 20428712. Its totient is φ = 2573568.

The previous prime is 7720877. The next prime is 7720903. The reversal of 7720896 is 6980277.

It is a super-2 number, since 2×7720896² = 119224470085632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19915 + ... + 20298.

Almost surely, 2^7720896 is an apocalyptic number.

It is an amenable number.

7720896 is an abundant number, since it is smaller than the sum of its proper divisors (12707816).

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

7720896 is a wasteful number, since it uses less digits than its factorization.

7720896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40228 (or 40218 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 7720896 is about 2778.6500319400. The cubic root of 7720896 is about 197.6465482847.

The spelling of 7720896 in words is "seven million, seven hundred twenty thousand, eight hundred ninety-six".