628054772 has 6 divisors (see below), whose sum is σ = 1099095858. Its totient is φ = 314027384.

The previous prime is 628054771. The next prime is 628054781. The reversal of 628054772 is 277450826.

It can be written as a sum of positive squares in only one way, i.e., 579557476 + 48497296 = 24074^2 + 6964^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628054771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78506843 + ... + 78506850.

It is an arithmetic number, because the mean of its divisors is an integer number (183182643).

Almost surely, 2^628054772 is an apocalyptic number.

It is an amenable number.

628054772 is a deficient number, since it is larger than the sum of its proper divisors (471041086).

628054772 is a wasteful number, since it uses less digits than its factorization.

628054772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157013697 (or 157013695 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 41.

The square root of 628054772 is about 25061.0209688273. The cubic root of 628054772 is about 856.3786664977.

It can be divided in two parts, 628054 and 772, that added together give a palindrome (628826).

The spelling of 628054772 in words is "six hundred twenty-eight million, fifty-four thousand, seven hundred seventy-two".