7620128 has 24 divisors (see below), whose sum is σ = 15288588. Its totient is φ = 3737344.

The previous prime is 7620101. The next prime is 7620143. The reversal of 7620128 is 8210267.

It can be written as a sum of positive squares in 2 ways, for example, as 6012304 + 1607824 = 2452^2 + 1268^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7620097 and 7620106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551 + ... + 3942.

Almost surely, 2^7620128 is an apocalyptic number.

It is an amenable number.

7620128 is an abundant number, since it is smaller than the sum of its proper divisors (7668460).

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

7620128 is a wasteful number, since it uses less digits than its factorization.

7620128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4556 (or 4548 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 7620128 is about 2760.4579330249. The cubic root of 7620128 is about 196.7829297552.

The spelling of 7620128 in words is "seven million, six hundred twenty thousand, one hundred twenty-eight".