628850540 has 12 divisors (see below), whose sum is σ = 1320586176. Its totient is φ = 251540208.

The previous prime is 628850503. The next prime is 628850569. The reversal of 628850540 is 45058826.

It is a junction number, because it is equal to n+sod(n) for n = 628850494 and 628850503.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15721244 + ... + 15721283.

It is an arithmetic number, because the mean of its divisors is an integer number (110048848).

Almost surely, 2^628850540 is an apocalyptic number.

It is an amenable number.

628850540 is an abundant number, since it is smaller than the sum of its proper divisors (691735636).

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

628850540 is a wasteful number, since it uses less digits than its factorization.

628850540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31442536 (or 31442534 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 628850540 is about 25076.8925507129. The cubic root of 628850540 is about 856.7402013787.

The spelling of 628850540 in words is "six hundred twenty-eight million, eight hundred fifty thousand, five hundred forty".