628247956 has 12 divisors (see below), whose sum is σ = 1256495968. Its totient is φ = 269249112.

The previous prime is 628247947. The next prime is 628247957. The reversal of 628247956 is 659742826.

628247956 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628247957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11218686 + ... + 11218741.

Almost surely, 2^628247956 is an apocalyptic number.

It is an amenable number.

628247956 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

628247956 is a wasteful number, since it uses less digits than its factorization.

628247956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22437438 (or 22437436 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 49.

The square root of 628247956 is about 25064.8749448307. The cubic root of 628247956 is about 856.4664622888.

The spelling of 628247956 in words is "six hundred twenty-eight million, two hundred forty-seven thousand, nine hundred fifty-six".