1228893776 has 40 divisors (see below), whose sum is σ = 2624248704. Its totient is φ = 552821760.

The previous prime is 1228893769. The next prime is 1228893811. The reversal of 1228893776 is 6773988221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18920 + ... + 53063.

Almost surely, 2^1228893776 is an apocalyptic number.

1228893776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1228893776 is an abundant number, since it is smaller than the sum of its proper divisors (1395354928).

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

1228893776 is a wasteful number, since it uses less digits than its factorization.

1228893776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72099 (or 72093 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 53.

The square root of 1228893776 is about 35055.5812389411. The cubic root of 1228893776 is about 1071.1199662892.

The spelling of 1228893776 in words is "one billion, two hundred twenty-eight million, eight hundred ninety-three thousand, seven hundred seventy-six".