1168428408 has 128 divisors (see below), whose sum is σ = 3526848000. Its totient is φ = 315118080.

The previous prime is 1168428367. The next prime is 1168428421. The reversal of 1168428408 is 8048248611.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1168428408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1241218 + ... + 1242158.

It is an arithmetic number, because the mean of its divisors is an integer number (27553500).

Almost surely, 2^1168428408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1168428408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1763424000).

1168428408 is an abundant number, since it is smaller than the sum of its proper divisors (2358419592).

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

1168428408 is a wasteful number, since it uses less digits than its factorization.

1168428408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365 (or 1361 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 42.

The square root of 1168428408 is about 34182.2820771229. The cubic root of 1168428408 is about 1053.2562279545.

It can be divided in two parts, 116842 and 8408, that added together give a triangular number (125250 = T₅₀₀).

The spelling of 1168428408 in words is "one billion, one hundred sixty-eight million, four hundred twenty-eight thousand, four hundred eight".