1971246228 has 96 divisors (see below), whose sum is σ = 5441200128. Its totient is φ = 543542400.

The previous prime is 1971246163. The next prime is 1971246253. The reversal of 1971246228 is 8226421791.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 1971246228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1215258 + ... + 1216878.

It is an arithmetic number, because the mean of its divisors is an integer number (56679168).

Almost surely, 2^1971246228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1971246228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2720600064).

1971246228 is an abundant number, since it is smaller than the sum of its proper divisors (3469953900).

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

1971246228 is a wasteful number, since it uses less digits than its factorization.

1971246228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133 (or 2131 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 1971246228 is about 44398.7187652977. The cubic root of 1971246228 is about 1253.8539673102.

The spelling of 1971246228 in words is "one billion, nine hundred seventy-one million, two hundred forty-six thousand, two hundred twenty-eight".