628783023 has 16 divisors (see below), whose sum is σ = 935865216. Its totient is φ = 372217440.

The previous prime is 628783021. The next prime is 628783033. The reversal of 628783023 is 320387826.

It is a happy number.

It is not a de Polignac number, because 628783023 - 2¹ = 628783021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628783021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220140 + ... + 222977.

It is an arithmetic number, because the mean of its divisors is an integer number (58491576).

Almost surely, 2^628783023 is an apocalyptic number.

628783023 is a deficient number, since it is larger than the sum of its proper divisors (307082193).

628783023 is a wasteful number, since it uses less digits than its factorization.

628783023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443174.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 628783023 is about 25075.5463150855. The cubic root of 628783023 is about 856.7095387676.

The spelling of 628783023 in words is "six hundred twenty-eight million, seven hundred eighty-three thousand, twenty-three".