628727458 has 16 divisors (see below), whose sum is σ = 975011904. Its totient is φ = 303836400.

The previous prime is 628727447. The next prime is 628727503. The reversal of 628727458 is 854727826.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16960 + ... + 39307.

It is an arithmetic number, because the mean of its divisors is an integer number (60938244).

Almost surely, 2^628727458 is an apocalyptic number.

628727458 is a deficient number, since it is larger than the sum of its proper divisors (346284446).

628727458 is a wasteful number, since it uses less digits than its factorization.

628727458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56457.

The product of its digits is 1505280, while the sum is 49.

The square root of 628727458 is about 25074.4383386747. The cubic root of 628727458 is about 856.6843024693.

It can be divided in two parts, 62872 and 7458, that multiplied together give a triangular number (468899376 = T₃₀₆₂₃).

The spelling of 628727458 in words is "six hundred twenty-eight million, seven hundred twenty-seven thousand, four hundred fifty-eight".