628670042 has 32 divisors (see below), whose sum is σ = 1266136704. Its totient is φ = 226094400.

The previous prime is 628670041. The next prime is 628670051. The reversal of 628670042 is 240076826.

It is a junction number, because it is equal to n+sod(n) for n = 628669984 and 628670011.

It is not an unprimeable number, because it can be changed into a prime (628670041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155009 + ... + 159012.

It is an arithmetic number, because the mean of its divisors is an integer number (39566772).

Almost surely, 2^628670042 is an apocalyptic number.

628670042 is an abundant number, since it is smaller than the sum of its proper divisors (637466662).

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

628670042 is a wasteful number, since it uses less digits than its factorization.

628670042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314054.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 628670042 is about 25073.2934015458. The cubic root of 628670042 is about 856.6582239289.

The spelling of 628670042 in words is "six hundred twenty-eight million, six hundred seventy thousand, forty-two".