628405470 has 96 divisors (see below), whose sum is σ = 2037035520. Its totient is φ = 130576320.

The previous prime is 628405457. The next prime is 628405489. The reversal of 628405470 is 74504826.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 38410 + ... + 52269.

It is an arithmetic number, because the mean of its divisors is an integer number (21219120).

Almost surely, 2^628405470 is an apocalyptic number.

628405470 is an abundant number, since it is smaller than the sum of its proper divisors (1408630050).

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

628405470 is a wasteful number, since it uses less digits than its factorization.

628405470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90710 (or 90707 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 628405470 is about 25068.0168740968. The cubic root of 628405470 is about 856.5380339160.

The spelling of 628405470 in words is "six hundred twenty-eight million, four hundred five thousand, four hundred seventy".