1128422456 has 32 divisors (see below), whose sum is σ = 2445228000. Its totient is φ = 478173696.

The previous prime is 1128422443. The next prime is 1128422489. The reversal of 1128422456 is 6542248211.

It is a super-3 number, since 3×1128422456³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108221 + ... + 118188.

It is an arithmetic number, because the mean of its divisors is an integer number (76413375).

Almost surely, 2^1128422456 is an apocalyptic number.

It is an amenable number.

1128422456 is an abundant number, since it is smaller than the sum of its proper divisors (1316805544).

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

1128422456 is a wasteful number, since it uses less digits than its factorization.

1128422456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226511 (or 226507 counting only the distinct ones).

The product of its digits is 30720, while the sum is 35.

The square root of 1128422456 is about 33591.9998809240. Note that the first 3 decimals coincide. The cubic root of 1128422456 is about 1041.0955098135.

The spelling of 1128422456 in words is "one billion, one hundred twenty-eight million, four hundred twenty-two thousand, four hundred fifty-six".