1128012870 has 32 divisors (see below), whose sum is σ = 2708948448. Its totient is φ = 300612608.

The previous prime is 1128012859. The next prime is 1128012877. The reversal of 1128012870 is 782108211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128012877) 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 15 ways as a sum of consecutive naturals, for example, 39832 + ... + 61988.

It is an arithmetic number, because the mean of its divisors is an integer number (84654639).

Almost surely, 2^1128012870 is an apocalyptic number.

1128012870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1128012870 is an abundant number, since it is smaller than the sum of its proper divisors (1580935578).

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

1128012870 is a wasteful number, since it uses less digits than its factorization.

1128012870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23864.

The product of its (nonzero) digits is 1792, while the sum is 30.

The square root of 1128012870 is about 33585.9028462836. The cubic root of 1128012870 is about 1040.9695316552.

The spelling of 1128012870 in words is "one billion, one hundred twenty-eight million, twelve thousand, eight hundred seventy".