628025790 has 128 divisors (see below), whose sum is σ = 1785535488. Its totient is φ = 138378240.

The previous prime is 628025771. The next prime is 628025809. The reversal of 628025790 is 97520826.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (628025771) and next prime (628025809).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1017562 + ... + 1018178.

It is an arithmetic number, because the mean of its divisors is an integer number (13949496).

Almost surely, 2^628025790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628025790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (892767744).

628025790 is an abundant number, since it is smaller than the sum of its proper divisors (1157509698).

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

628025790 is a wasteful number, since it uses less digits than its factorization.

628025790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 628025790 is about 25060.4427335193. The cubic root of 628025790 is about 856.3654935763.

The spelling of 628025790 in words is "six hundred twenty-eight million, twenty-five thousand, seven hundred ninety".