1128149700 has 72 divisors (see below), whose sum is σ = 3435925920. Its totient is φ = 285004800.

The previous prime is 1128149683. The next prime is 1128149707. The reversal of 1128149700 is 79418211.

It is a super-2 number, since 2×1128149700² = 2545443491220180000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1128149707) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93261 + ... + 104660.

Almost surely, 2^1128149700 is an apocalyptic number.

1128149700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1128149700 is an abundant number, since it is smaller than the sum of its proper divisors (2307776220).

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

1128149700 is a wasteful number, since it uses less digits than its factorization.

1128149700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197957 (or 197950 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 1128149700 is about 33587.9397998746. The cubic root of 1128149700 is about 1041.0116204487.

The spelling of 1128149700 in words is "one billion, one hundred twenty-eight million, one hundred forty-nine thousand, seven hundred".