628162887 has 16 divisors (see below), whose sum is σ = 914199552. Its totient is φ = 380493120.

The previous prime is 628162879. The next prime is 628162919. The reversal of 628162887 is 788261826.

It is not a de Polignac number, because 628162887 - 2³ = 628162879 is a prime.

It is a super-2 number, since 2×628162887² = 789177225208349538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628162807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71658 + ... + 79944.

It is an arithmetic number, because the mean of its divisors is an integer number (57137472).

Almost surely, 2^628162887 is an apocalyptic number.

628162887 is a deficient number, since it is larger than the sum of its proper divisors (286036665).

628162887 is a wasteful number, since it uses less digits than its factorization.

628162887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10598.

The product of its digits is 516096, while the sum is 48.

The square root of 628162887 is about 25063.1779110312. The cubic root of 628162887 is about 856.4278034368.

It can be divided in two parts, 62816 and 2887, that added together give a triangular number (65703 = T₃₆₂).

The spelling of 628162887 in words is "six hundred twenty-eight million, one hundred sixty-two thousand, eight hundred eighty-seven".