628726350 has 144 divisors (see below), whose sum is σ = 1832280048. Its totient is φ = 142248960.

The previous prime is 628726337. The next prime is 628726363. The reversal of 628726350 is 53627826.

It is an interprime number because it is at equal distance from previous prime (628726337) and next prime (628726363).

It is a junction number, because it is equal to n+sod(n) for n = 628726299 and 628726308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 830172 + ... + 830928.

It is an arithmetic number, because the mean of its divisors is an integer number (12724167).

Almost surely, 2^628726350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628726350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (916140024).

628726350 is an abundant number, since it is smaller than the sum of its proper divisors (1203553698).

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

628726350 is a wasteful number, since it uses less digits than its factorization.

628726350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899 (or 887 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 628726350 is about 25074.4162444512. The cubic root of 628726350 is about 856.6837992270.

The spelling of 628726350 in words is "six hundred twenty-eight million, seven hundred twenty-six thousand, three hundred fifty".