3128578623 has 12 divisors (see below), whose sum is σ = 4641195208. Its totient is φ = 2029348080.

The previous prime is 3128578603. The next prime is 3128578633. The reversal of 3128578623 is 3268758213.

3128578623 is a `hidden beast` number, since 3 + 12 + 8 + 5 + 7 + 8 + 623 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-3128578623 is a prime.

It is a super-2 number, since 2×3128578623² = 19576008400585152258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3128578603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4697233 + ... + 4697898.

Almost surely, 2^3128578623 is an apocalyptic number.

3128578623 is a deficient number, since it is larger than the sum of its proper divisors (1512616585).

3128578623 is a wasteful number, since it uses less digits than its factorization.

3128578623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9395174 (or 9395171 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 3128578623 is about 55933.6984562973. The cubic root of 3128578623 is about 1462.5667339262.

The spelling of 3128578623 in words is "three billion, one hundred twenty-eight million, five hundred seventy-eight thousand, six hundred twenty-three".