628135233 has 8 divisors (see below), whose sum is σ = 913651296. Its totient is φ = 380688000.

The previous prime is 628135229. The next prime is 628135243. The reversal of 628135233 is 332531826.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 628135233 - 2² = 628135229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 19034401 = 628135233 / (6 + 2 + 8 + 1 + 3 + 5 + 2 + 3 + 3).

It is a junction number, because it is equal to n+sod(n) for n = 628135194 and 628135203.

It is not an unprimeable number, because it can be changed into a prime (628135243) 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, 9517168 + ... + 9517233.

It is an arithmetic number, because the mean of its divisors is an integer number (114206412).

Almost surely, 2^628135233 is an apocalyptic number.

It is an amenable number.

628135233 is a deficient number, since it is larger than the sum of its proper divisors (285516063).

628135233 is a wasteful number, since it uses less digits than its factorization.

628135233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19034415.

The product of its digits is 25920, while the sum is 33.

The square root of 628135233 is about 25062.6262191335. The cubic root of 628135233 is about 856.4152355702.

It can be divided in two parts, 6281 and 35233, that added together give a palindrome (41514).

The spelling of 628135233 in words is "six hundred twenty-eight million, one hundred thirty-five thousand, two hundred thirty-three".