1228261954828 has 12 divisors (see below), whose sum is σ = 2149769219472. Its totient is φ = 614042177840.

The previous prime is 1228261954729. The next prime is 1228261954837. The reversal of 1228261954828 is 8284591628221.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22168768 + ... + 22224103.

It is an arithmetic number, because the mean of its divisors is an integer number (179147434956).

Almost surely, 2^{1228261954828} is an apocalyptic number.

It is an amenable number.

1228261954828 is a deficient number, since it is larger than the sum of its proper divisors (921507264644).

1228261954828 is a wasteful number, since it uses less digits than its factorization.

1228261954828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44399792 (or 44399790 counting only the distinct ones).

The product of its digits is 8847360, while the sum is 58.

The spelling of 1228261954828 in words is "one trillion, two hundred twenty-eight billion, two hundred sixty-one million, nine hundred fifty-four thousand, eight hundred twenty-eight".