628287270 has 32 divisors (see below), whose sum is σ = 1623881952. Its totient is φ = 154655232.

The previous prime is 628287221. The next prime is 628287277. The reversal of 628287270 is 72782826.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628287277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 805107 + ... + 805886.

It is an arithmetic number, because the mean of its divisors is an integer number (50746311).

Almost surely, 2^628287270 is an apocalyptic number.

628287270 is an abundant number, since it is smaller than the sum of its proper divisors (995594682).

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

628287270 is a wasteful number, since it uses less digits than its factorization.

628287270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611016.

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 628287270 is about 25065.6591774483. The cubic root of 628287270 is about 856.4843270081.

The spelling of 628287270 in words is "six hundred twenty-eight million, two hundred eighty-seven thousand, two hundred seventy".