1228136376 has 16 divisors (see below), whose sum is σ = 3070341000. Its totient is φ = 409378784.

The previous prime is 1228136339. The next prime is 1228136387. The reversal of 1228136376 is 6736318221.

It is a congruent 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, 25586151 + ... + 25586198.

Almost surely, 2^1228136376 is an apocalyptic number.

It is an amenable number.

1228136376 is an abundant number, since it is smaller than the sum of its proper divisors (1842204624).

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

1228136376 is a wasteful number, since it uses less digits than its factorization.

1228136376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51172358 (or 51172354 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 1228136376 is about 35044.7767292074. The cubic root of 1228136376 is about 1070.8998678007.

The spelling of 1228136376 in words is "one billion, two hundred twenty-eight million, one hundred thirty-six thousand, three hundred seventy-six".