628397141 has 8 divisors (see below), whose sum is σ = 653912160. Its totient is φ = 603377712.

The previous prime is 628397131. The next prime is 628397149. The reversal of 628397141 is 141793826.

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 628397141 - 2²² = 624202837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628397149) 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, 121310 + ... + 126383.

It is an arithmetic number, because the mean of its divisors is an integer number (81739020).

Almost surely, 2^628397141 is an apocalyptic number.

It is an amenable number.

628397141 is a deficient number, since it is larger than the sum of its proper divisors (25515019).

628397141 is a wasteful number, since it uses less digits than its factorization.

628397141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247795.

The product of its digits is 72576, while the sum is 41.

The square root of 628397141 is about 25067.8507455266. The cubic root of 628397141 is about 856.5342496625.

The spelling of 628397141 in words is "six hundred twenty-eight million, three hundred ninety-seven thousand, one hundred forty-one".