1017787212 has 144 divisors (see below), whose sum is σ = 3088481760. Its totient is φ = 279189504.

The previous prime is 1017787207. The next prime is 1017787213. The reversal of 1017787212 is 2127877101.

1017787212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (1017787213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 147798 + ... + 154530.

It is an arithmetic number, because the mean of its divisors is an integer number (21447790).

Almost surely, 2^1017787212 is an apocalyptic number.

1017787212 is a gapful number since it is divisible by the number (12) 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 1017787212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1544240880).

1017787212 is an abundant number, since it is smaller than the sum of its proper divisors (2070694548).

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

1017787212 is a wasteful number, since it uses less digits than its factorization.

1017787212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6792 (or 6787 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 36.

The square root of 1017787212 is about 31902.7774966381. Note that the first 3 decimals coincide. The cubic root of 1017787212 is about 1005.8942601044.

The spelling of 1017787212 in words is "one billion, seventeen million, seven hundred eighty-seven thousand, two hundred twelve".