1628660752 has 20 divisors (see below), whose sum is σ = 3173775660. Its totient is φ = 809621888.

The previous prime is 1628660731. The next prime is 1628660767. The reversal of 1628660752 is 2570668261.

It can be written as a sum of positive squares in 2 ways, for example, as 1584358416 + 44302336 = 39804^2 + 6656^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1628660699 and 1628660708.

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, 291427 + ... + 296962.

It is an arithmetic number, because the mean of its divisors is an integer number (158688783).

Almost surely, 2^1628660752 is an apocalyptic number.

It is an amenable number.

1628660752 is a deficient number, since it is larger than the sum of its proper divisors (1545114908).

1628660752 is a wasteful number, since it uses less digits than its factorization.

1628660752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588570 (or 588564 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 1628660752 is about 40356.6692381817. The cubic root of 1628660752 is about 1176.5495179680.

The spelling of 1628660752 in words is "one billion, six hundred twenty-eight million, six hundred sixty thousand, seven hundred fifty-two".