628123454 has 24 divisors (see below), whose sum is σ = 1099523160. Its totient is φ = 268333296.

The previous prime is 628123427. The next prime is 628123471. The reversal of 628123454 is 454321826.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20957 + ... + 41175.

It is an arithmetic number, because the mean of its divisors is an integer number (45813465).

Almost surely, 2^628123454 is an apocalyptic number.

628123454 is a deficient number, since it is larger than the sum of its proper divisors (471399706).

628123454 is a wasteful number, since it uses less digits than its factorization.

628123454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20552 (or 20545 counting only the distinct ones).

The product of its digits is 46080, while the sum is 35.

The square root of 628123454 is about 25062.3912266966. The cubic root of 628123454 is about 856.4098822760.

It can be divided in two parts, 62812 and 3454, that added together give a palindrome (66266).

The spelling of 628123454 in words is "six hundred twenty-eight million, one hundred twenty-three thousand, four hundred fifty-four".