623128460 has 24 divisors (see below), whose sum is σ = 1309304976. Its totient is φ = 249111360.

The previous prime is 623128417. The next prime is 623128463. The reversal of 623128460 is 64821326.

It is not an unprimeable number, because it can be changed into a prime (623128463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32474 + ... + 47966.

It is an arithmetic number, because the mean of its divisors is an integer number (54554374).

Almost surely, 2^623128460 is an apocalyptic number.

It is an amenable number.

623128460 is an abundant number, since it is smaller than the sum of its proper divisors (686176516).

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

623128460 is a wasteful number, since it uses less digits than its factorization.

623128460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17513 (or 17511 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 623128460 is about 24962.5411366712. The cubic root of 623128460 is about 854.1337098475.

Adding to 623128460 its reverse (64821326), we get a palindrome (687949786).

The spelling of 623128460 in words is "six hundred twenty-three million, one hundred twenty-eight thousand, four hundred sixty".