628051240 has 32 divisors (see below), whose sum is σ = 1414234080. Its totient is φ = 251021632.

The previous prime is 628051223. The next prime is 628051253. The reversal of 628051240 is 42150826.

628051240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 628051199 and 628051208.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51579 + ... + 62581.

It is an arithmetic number, because the mean of its divisors is an integer number (44194815).

Almost surely, 2^628051240 is an apocalyptic number.

It is an amenable number.

628051240 is an abundant number, since it is smaller than the sum of its proper divisors (786182840).

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

628051240 is a wasteful number, since it uses less digits than its factorization.

628051240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12441 (or 12437 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 628051240 is about 25060.9505007292. The cubic root of 628051240 is about 856.3770611519.

The spelling of 628051240 in words is "six hundred twenty-eight million, fifty-one thousand, two hundred forty".