628432146 has 24 divisors (see below), whose sum is σ = 1408555980. Its totient is φ = 202253856.

The previous prime is 628432141. The next prime is 628432157. The reversal of 628432146 is 641234826.

628432146 is a `hidden beast` number, since 628 + 4 + 3 + 21 + 4 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 539865225 + 88566921 = 23235^2 + 9411^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 628432146.

It is not an unprimeable number, because it can be changed into a prime (628432141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 601425 + ... + 602468.

Almost surely, 2^628432146 is an apocalyptic number.

628432146 is an abundant number, since it is smaller than the sum of its proper divisors (780123834).

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

628432146 is a wasteful number, since it uses less digits than its factorization.

628432146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203930 (or 1203927 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 628432146 is about 25068.5489408542. The cubic root of 628432146 is about 856.5501538430.

The spelling of 628432146 in words is "six hundred twenty-eight million, four hundred thirty-two thousand, one hundred forty-six".