1129450220 has 12 divisors (see below), whose sum is σ = 2371845504. Its totient is φ = 451780080.

The previous prime is 1129450183. The next prime is 1129450277. The reversal of 1129450220 is 220549211.

It is a self number, because there is not a number n which added to its sum of digits gives 1129450220.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 28236236 + ... + 28236275.

It is an arithmetic number, because the mean of its divisors is an integer number (197653792).

Almost surely, 2^1129450220 is an apocalyptic number.

1129450220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1129450220 is an abundant number, since it is smaller than the sum of its proper divisors (1242395284).

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

1129450220 is a wasteful number, since it uses less digits than its factorization.

1129450220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56472520 (or 56472518 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1129450220 is about 33607.2941487410. The cubic root of 1129450220 is about 1041.4114895228.

Adding to 1129450220 its reverse (220549211), we get a palindrome (1349999431).

The spelling of 1129450220 in words is "one billion, one hundred twenty-nine million, four hundred fifty thousand, two hundred twenty".