628783032 has 64 divisors (see below), whose sum is σ = 1624171680. Its totient is φ = 202701312.

The previous prime is 628783021. The next prime is 628783033. The reversal of 628783032 is 230387826.

It is a happy number.

It is a super-2 number, since 2×628783032² = 790736202662226048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628783033) 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, 151578 + ... + 155670.

Almost surely, 2^628783032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628783032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (812085840).

628783032 is an abundant number, since it is smaller than the sum of its proper divisors (995388648).

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

628783032 is a wasteful number, since it uses less digits than its factorization.

628783032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4312 (or 4308 counting only the distinct ones).

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

The square root of 628783032 is about 25075.5464945432. The cubic root of 628783032 is about 856.7095428551.

The spelling of 628783032 in words is "six hundred twenty-eight million, seven hundred eighty-three thousand, thirty-two".