3128100 has 36 divisors (see below), whose sum is σ = 9051504. Its totient is φ = 834080.

The previous prime is 3128057. The next prime is 3128101. The reversal of 3128100 is 18213.

It is a happy number.

It is a super-2 number, since 2×3128100² = 19570019220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 3128100.

It is not an unprimeable number, because it can be changed into a prime (3128101) 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 11 ways as a sum of consecutive naturals, for example, 4914 + ... + 5513.

Almost surely, 2^3128100 is an apocalyptic number.

3128100 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3128100 is an abundant number, since it is smaller than the sum of its proper divisors (5923404).

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

3128100 is a wasteful number, since it uses less digits than its factorization.

3128100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10444 (or 10437 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 3128100 is about 1768.6435480334. The cubic root of 3128100 is about 146.2492146937.

The spelling of 3128100 in words is "three million, one hundred twenty-eight thousand, one hundred".