2257663212 has 96 divisors (see below), whose sum is σ = 6734013440. Its totient is φ = 640742400.

The previous prime is 2257663193. The next prime is 2257663339. The reversal of 2257663212 is 2123667522.

2257663212 is a `hidden beast` number, since 2 + 2 + 5 + 7 + 6 + 632 + 12 = 666.

It is a super-3 number, since 3×2257663212³ (a number of 29 digits) contains 333 as substring.

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

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, 104268 + ... + 124044.

Almost surely, 2^2257663212 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 2257663212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3367006720).

2257663212 is an abundant number, since it is smaller than the sum of its proper divisors (4476350228).

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

2257663212 is a wasteful number, since it uses less digits than its factorization.

2257663212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19948 (or 19940 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 2257663212 is about 47514.8735871201. The cubic root of 2257663212 is about 1311.8566629982.

The spelling of 2257663212 in words is "two billion, two hundred fifty-seven million, six hundred sixty-three thousand, two hundred twelve".