351228778 has 8 divisors (see below), whose sum is σ = 527232672. Its totient is φ = 175484556.

The previous prime is 351228767. The next prime is 351228781. The reversal of 351228778 is 877822153.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61500 + ... + 66967.

It is an arithmetic number, because the mean of its divisors is an integer number (65904084).

Almost surely, 2^351228778 is an apocalyptic number.

351228778 is a deficient number, since it is larger than the sum of its proper divisors (176003894).

351228778 is a wasteful number, since it uses less digits than its factorization.

351228778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129836.

The product of its digits is 188160, while the sum is 43.

The square root of 351228778 is about 18741.0986337514. The cubic root of 351228778 is about 705.5536304804.

The spelling of 351228778 in words is "three hundred fifty-one million, two hundred twenty-eight thousand, seven hundred seventy-eight".