628157712 has 160 divisors (see below), whose sum is σ = 2062090240. Its totient is φ = 160289280.

The previous prime is 628157659. The next prime is 628157753. The reversal of 628157712 is 217751826.

It is a super-2 number, since 2×628157712² = 789164222290149888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133089 + ... + 137727.

It is an arithmetic number, because the mean of its divisors is an integer number (12888064).

Almost surely, 2^628157712 is an apocalyptic number.

628157712 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628157712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1031045120).

628157712 is an abundant number, since it is smaller than the sum of its proper divisors (1433932528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

628157712 is a wasteful number, since it uses less digits than its factorization.

628157712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4701 (or 4695 counting only the distinct ones).

The product of its digits is 47040, while the sum is 39.

The square root of 628157712 is about 25063.0746717158. The cubic root of 628157712 is about 856.4254515914.

The spelling of 628157712 in words is "six hundred twenty-eight million, one hundred fifty-seven thousand, seven hundred twelve".