628540416 has 132 divisors (see below), whose sum is σ = 2074380672. Its totient is φ = 179564544.

The previous prime is 628540397. The next prime is 628540427. The reversal of 628540416 is 614045826.

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 (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59641 + ... + 69383.

Almost surely, 2^628540416 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 628540416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1037190336).

628540416 is an abundant number, since it is smaller than the sum of its proper divisors (1445840256).

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

628540416 is a wasteful number, since it uses less digits than its factorization.

628540416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9776 (or 9755 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 628540416 is about 25070.7083266508. The cubic root of 628540416 is about 856.5993415240.

The spelling of 628540416 in words is "six hundred twenty-eight million, five hundred forty thousand, four hundred sixteen".