628901839 has 16 divisors (see below), whose sum is σ = 654998400. Its totient is φ = 603348480.

The previous prime is 628901837. The next prime is 628901879. The reversal of 628901839 is 938109826.

It is a cyclic number.

It is not a de Polignac number, because 628901839 - 2¹ = 628901837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628901831) 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, 1458954 + ... + 1459384.

It is an arithmetic number, because the mean of its divisors is an integer number (40937400).

Almost surely, 2^628901839 is an apocalyptic number.

628901839 is a deficient number, since it is larger than the sum of its proper divisors (26096561).

628901839 is a wasteful number, since it uses less digits than its factorization.

628901839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 628901839 is about 25077.9153639213. The cubic root of 628901839 is about 856.7634971741.

The spelling of 628901839 in words is "six hundred twenty-eight million, nine hundred one thousand, eight hundred thirty-nine".