628280792 has 8 divisors (see below), whose sum is σ = 1178026500. Its totient is φ = 314140392.

The previous prime is 628280773. The next prime is 628280801. The reversal of 628280792 is 297082826.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×628280792² = 789473507192294528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39267542 + ... + 39267557.

Almost surely, 2^628280792 is an apocalyptic number.

It is an amenable number.

628280792 is a deficient number, since it is larger than the sum of its proper divisors (549745708).

628280792 is a wasteful number, since it uses less digits than its factorization.

628280792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78535105 (or 78535101 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 628280792 is about 25065.5299564960. The cubic root of 628280792 is about 856.4813833841.

The spelling of 628280792 in words is "six hundred twenty-eight million, two hundred eighty thousand, seven hundred ninety-two".