2628920529 has 33 divisors (see below), whose sum is σ = 3962136009. Its totient is φ = 1744307460.

The previous prime is 2628920521. The next prime is 2628920573. The reversal of 2628920529 is 9250298262.

The square root of 2628920529 is 51273.

It is a perfect power (a square), and thus also a powerful number.

2628920529 is a `hidden beast` number, since 26 + 2 + 89 + 20 + 529 = 666.

It is not a de Polignac number, because 2628920529 - 2³ = 2628920521 is a prime.

It is a super-2 number, since 2×2628920529² = 13822446295595279682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2628920521) by changing a digit.

It is a polite number, since it can be written in 32 ways as a sum of consecutive naturals, for example, 12459234 + ... + 12459444.

Almost surely, 2^2628920529 is an apocalyptic number.

2628920529 is the 51273-rd square number.

2628920529 is the 25637-th centered octagonal number.

It is an amenable number.

2628920529 is a deficient number, since it is larger than the sum of its proper divisors (1333215480).

2628920529 is an frugal number, since it uses more digits than its factorization.

2628920529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The cubic root of 2628920529 is about 1380.1485048125.

The spelling of 2628920529 in words is "two billion, six hundred twenty-eight million, nine hundred twenty thousand, five hundred twenty-nine".