7820453428 has 24 divisors (see below), whose sum is σ = 14429458400. Its totient is φ = 3698418528.

The previous prime is 7820453423. The next prime is 7820453453. The reversal of 7820453428 is 8243540287.

It is a super-2 number, since 2×7820453428² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7820453423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36075 + ... + 130162.

Almost surely, 2^7820453428 is an apocalyptic number.

It is an amenable number.

7820453428 is a deficient number, since it is larger than the sum of its proper divisors (6609004972).

7820453428 is a wasteful number, since it uses less digits than its factorization.

7820453428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166879 (or 166877 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 43.

The square root of 7820453428 is about 88433.3275863800. The cubic root of 7820453428 is about 1984.9244348565.

The spelling of 7820453428 in words is "seven billion, eight hundred twenty million, four hundred fifty-three thousand, four hundred twenty-eight".