628890486 has 32 divisors (see below), whose sum is σ = 1522022400. Its totient is φ = 169113216.

The previous prime is 628890461. The next prime is 628890511. The reversal of 628890486 is 684098826.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (628890461) and next prime (628890511).

It is a super-3 number, since 3×628890486³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 439686 + ... + 441113.

It is an arithmetic number, because the mean of its divisors is an integer number (47563200).

Almost surely, 2^628890486 is an apocalyptic number.

628890486 is an abundant number, since it is smaller than the sum of its proper divisors (893131914).

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

628890486 is a wasteful number, since it uses less digits than its factorization.

628890486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880828.

The product of its (nonzero) digits is 1327104, while the sum is 51.

The square root of 628890486 is about 25077.6890083596. The cubic root of 628890486 is about 856.7583416824.

The spelling of 628890486 in words is "six hundred twenty-eight million, eight hundred ninety thousand, four hundred eighty-six".