1128212250 has 64 divisors (see below), whose sum is σ = 3072041856. Its totient is φ = 273504000.

The previous prime is 1128212249. The next prime is 1128212257. The reversal of 1128212250 is 522128211.

It is a self number, because there is not a number n which added to its sum of digits gives 1128212250.

It is not an unprimeable number, because it can be changed into a prime (1128212257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60127 + ... + 76626.

It is an arithmetic number, because the mean of its divisors is an integer number (48000654).

Almost surely, 2^1128212250 is an apocalyptic number.

1128212250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1128212250 is an abundant number, since it is smaller than the sum of its proper divisors (1943829606).

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

1128212250 is a wasteful number, since it uses less digits than its factorization.

1128212250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136784 (or 136774 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 1128212250 is about 33588.8709247572. The cubic root of 1128212250 is about 1041.0308596429.

It can be divided in two parts, 11282 and 12250, that added together give a palindrome (23532).

The spelling of 1128212250 in words is "one billion, one hundred twenty-eight million, two hundred twelve thousand, two hundred fifty".