628927740 has 432 divisors, whose sum is σ = 2439964800. Its totient is φ = 135209088.

The previous prime is 628927657. The next prime is 628927771. The reversal of 628927740 is 47729826.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4524591 + ... + 4524729.

Almost surely, 2^628927740 is an apocalyptic number.

628927740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628927740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1219982400).

628927740 is an abundant number, since it is smaller than the sum of its proper divisors (1811037060).

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

628927740 is a wasteful number, since it uses less digits than its factorization.

628927740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 628927740 is about 25078.4317691518. The cubic root of 628927740 is about 856.7752588011.

The spelling of 628927740 in words is "six hundred twenty-eight million, nine hundred twenty-seven thousand, seven hundred forty".