628174404 has 108 divisors (see below), whose sum is σ = 1879789548. Its totient is φ = 175697280.

The previous prime is 628174399. The next prime is 628174433. The reversal of 628174404 is 404471826.

It can be written as a sum of positive squares in 2 ways, for example, as 305900100 + 322274304 = 17490^2 + 17952^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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 35 ways as a sum of consecutive naturals, for example, 51082 + ... + 62174.

Almost surely, 2^628174404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628174404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (939894774).

628174404 is an abundant number, since it is smaller than the sum of its proper divisors (1251615144).

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

628174404 is a wasteful number, since it uses less digits than its factorization.

628174404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11138 (or 11122 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 628174404 is about 25063.4076693494. The cubic root of 628174404 is about 856.4330374395.

The spelling of 628174404 in words is "six hundred twenty-eight million, one hundred seventy-four thousand, four hundred four".