130228777 has 4 divisors (see below), whose sum is σ = 148832896. Its totient is φ = 111624660.

The previous prime is 130228759. The next prime is 130228817. The reversal of 130228777 is 777822031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 130228777 - 2⁷ = 130228649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130228727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9302049 + ... + 9302062.

It is an arithmetic number, because the mean of its divisors is an integer number (37208224).

Almost surely, 2^130228777 is an apocalyptic number.

It is an amenable number.

130228777 is a deficient number, since it is larger than the sum of its proper divisors (18604119).

130228777 is an equidigital number, since it uses as much as digits as its factorization.

130228777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18604118.

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 130228777 is about 11411.7823761234. The cubic root of 130228777 is about 506.8766913118.

The spelling of 130228777 in words is "one hundred thirty million, two hundred twenty-eight thousand, seven hundred seventy-seven".