1127797440 has 672 divisors, whose sum is σ = 4799746560. Its totient is φ = 218972160.

The previous prime is 1127797439. The next prime is 1127797483. The reversal of 1127797440 is 447977211.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 1127797392 and 1127797401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15449244 + ... + 15449316.

It is an arithmetic number, because the mean of its divisors is an integer number (7142480).

Almost surely, 2^1127797440 is an apocalyptic number.

1127797440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1127797440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2399873280).

1127797440 is an abundant number, since it is smaller than the sum of its proper divisors (3671949120).

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

1127797440 is a wasteful number, since it uses less digits than its factorization.

1127797440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 42.

The square root of 1127797440 is about 33582.6955439851. The cubic root of 1127797440 is about 1040.9032586690.

The spelling of 1127797440 in words is "one billion, one hundred twenty-seven million, seven hundred ninety-seven thousand, four hundred forty".