1229106528 has 384 divisors, whose sum is σ = 4214125440. Its totient is φ = 345047040.

The previous prime is 1229106509. The next prime is 1229106551. The reversal of 1229106528 is 8256019221.

1229106528 is a `hidden beast` number, since 1 + 2 + 29 + 106 + 528 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1229106492 and 1229106501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7828626 + ... + 7828782.

It is an arithmetic number, because the mean of its divisors is an integer number (10974285).

Almost surely, 2^1229106528 is an apocalyptic number.

1229106528 is a gapful number since it is divisible by the number (18) 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 1229106528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2107062720).

1229106528 is an abundant number, since it is smaller than the sum of its proper divisors (2985018912).

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

1229106528 is a wasteful number, since it uses less digits than its factorization.

1229106528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 1229106528 is about 35058.6156030155. The cubic root of 1229106528 is about 1071.1817752023.

The spelling of 1229106528 in words is "one billion, two hundred twenty-nine million, one hundred six thousand, five hundred twenty-eight".