628377812 has 24 divisors (see below), whose sum is σ = 1137276672. Its totient is φ = 303480000.

The previous prime is 628377803. The next prime is 628377821. The reversal of 628377812 is 218773826.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (628377803) and next prime (628377821).

It is a super-2 number, since 2×628377812² = 789717349227814688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65312 + ... + 74312.

It is an arithmetic number, because the mean of its divisors is an integer number (47386528).

Almost surely, 2^628377812 is an apocalyptic number.

628377812 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

628377812 is a deficient number, since it is larger than the sum of its proper divisors (508898860).

628377812 is a wasteful number, since it uses less digits than its factorization.

628377812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9599 (or 9597 counting only the distinct ones).

The product of its digits is 225792, while the sum is 44.

The square root of 628377812 is about 25067.4652089117. The cubic root of 628377812 is about 856.5254674666.

The spelling of 628377812 in words is "six hundred twenty-eight million, three hundred seventy-seven thousand, eight hundred twelve".