1143428100 has 36 divisors (see below), whose sum is σ = 3308319504. Its totient is φ = 304914080.

The previous prime is 1143428053. The next prime is 1143428119. The reversal of 1143428100 is 18243411.

It is a super-2 number, since 2×1143428100² = 2614855639739220000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1905414 + ... + 1906013.

It is an arithmetic number, because the mean of its divisors is an integer number (91897764).

Almost surely, 2^1143428100 is an apocalyptic number.

1143428100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143428100 is an abundant number, since it is smaller than the sum of its proper divisors (2164891404).

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

1143428100 is a wasteful number, since it uses less digits than its factorization.

1143428100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3811444 (or 3811437 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1143428100 is about 33814.6137047283. The cubic root of 1143428100 is about 1045.6899970577.

The spelling of 1143428100 in words is "one billion, one hundred forty-three million, four hundred twenty-eight thousand, one hundred".