628350408281 has 8 divisors (see below), whose sum is σ = 641743173120. Its totient is φ = 614958627168.

The previous prime is 628350408239. The next prime is 628350408319. The reversal of 628350408281 is 182804053826.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 628350408281 - 2¹⁰ = 628350407257 is a prime.

It is a super-2 number, since 2×628350408281² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628350408781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1125845 + ... + 1588781.

It is an arithmetic number, because the mean of its divisors is an integer number (80217896640).

Almost surely, 2^628350408281 is an apocalyptic number.

It is an amenable number.

628350408281 is a deficient number, since it is larger than the sum of its proper divisors (13392764839).

628350408281 is a wasteful number, since it uses less digits than its factorization.

628350408281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491863.

The product of its (nonzero) digits is 737280, while the sum is 47.

The spelling of 628350408281 in words is "six hundred twenty-eight billion, three hundred fifty million, four hundred eight thousand, two hundred eighty-one".