1051215228 has 54 divisors (see below), whose sum is σ = 3091078536. Its totient is φ = 300346704.

The previous prime is 1051215203. The next prime is 1051215241. The reversal of 1051215228 is 8225121501.

It is a happy number.

1051215228 is a `hidden beast` number, since 10 + 5 + 121 + 522 + 8 = 666.

It is a super-2 number, since 2×1051215228² = 2210106911158183968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 296200 + ... + 299727.

Almost surely, 2^1051215228 is an apocalyptic number.

1051215228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1051215228 is an abundant number, since it is smaller than the sum of its proper divisors (2039863308).

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

1051215228 is a wasteful number, since it uses less digits than its factorization.

1051215228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595951 (or 595939 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 1051215228 is about 32422.4494447906. The cubic root of 1051215228 is about 1016.7883178029.

Adding to 1051215228 its reverse (8225121501), we get a palindrome (9276336729).

The spelling of 1051215228 in words is "one billion, fifty-one million, two hundred fifteen thousand, two hundred twenty-eight".