628178234 has 16 divisors (see below), whose sum is σ = 977619456. Its totient is φ = 302408400.

The previous prime is 628178233. The next prime is 628178249. The reversal of 628178234 is 432871826.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 628178191 and 628178200.

It is not an unprimeable number, because it can be changed into a prime (628178233) 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, 13502 + ... + 37929.

It is an arithmetic number, because the mean of its divisors is an integer number (61101216).

Almost surely, 2^628178234 is an apocalyptic number.

628178234 is a deficient number, since it is larger than the sum of its proper divisors (349441222).

628178234 is a wasteful number, since it uses less digits than its factorization.

628178234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51661.

The product of its digits is 129024, while the sum is 41.

The square root of 628178234 is about 25063.4840754433. The cubic root of 628178234 is about 856.4347780027.

The spelling of 628178234 in words is "six hundred twenty-eight million, one hundred seventy-eight thousand, two hundred thirty-four".