1011229028 has 12 divisors (see below), whose sum is σ = 1781528700. Its totient is φ = 502220832.

The previous prime is 1011229027. The next prime is 1011229061. The reversal of 1011229028 is 8209221101.

It can be written as a sum of positive squares in 2 ways, for example, as 247369984 + 763859044 = 15728^2 + 27638^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1011228988 and 1011229006.

It is not an unprimeable number, because it can be changed into a prime (1011229027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 847751 + ... + 848942.

It is an arithmetic number, because the mean of its divisors is an integer number (148460725).

Almost surely, 2^1011229028 is an apocalyptic number.

It is an amenable number.

1011229028 is a deficient number, since it is larger than the sum of its proper divisors (770299672).

1011229028 is a wasteful number, since it uses less digits than its factorization.

1011229028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1696846 (or 1696844 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 1011229028 is about 31799.8274838088. The cubic root of 1011229028 is about 1003.7290859655.

The spelling of 1011229028 in words is "one billion, eleven million, two hundred twenty-nine thousand, twenty-eight".