628913235 has 16 divisors (see below), whose sum is σ = 1033458336. Its totient is φ = 326354688.

The previous prime is 628913231. The next prime is 628913237. The reversal of 628913235 is 532319826.

It is not a de Polignac number, because 628913235 - 2² = 628913231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 628913193 and 628913202.

It is not an unprimeable number, because it can be changed into a prime (628913231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 566034 + ... + 567143.

It is an arithmetic number, because the mean of its divisors is an integer number (64591146).

Almost surely, 2^628913235 is an apocalyptic number.

628913235 is a deficient number, since it is larger than the sum of its proper divisors (404545101).

628913235 is a wasteful number, since it uses less digits than its factorization.

628913235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133222.

The product of its digits is 77760, while the sum is 39.

The square root of 628913235 is about 25078.1425747602. The cubic root of 628913235 is about 856.7686721300.

The spelling of 628913235 in words is "six hundred twenty-eight million, nine hundred thirteen thousand, two hundred thirty-five".