1226487878 has 16 divisors (see below), whose sum is σ = 2293691904. Its totient is φ = 477852360.

The previous prime is 1226487869. The next prime is 1226487881. The reversal of 1226487878 is 8787846221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3981950 + ... + 3982257.

It is an arithmetic number, because the mean of its divisors is an integer number (143355744).

Almost surely, 2^1226487878 is an apocalyptic number.

1226487878 is a deficient number, since it is larger than the sum of its proper divisors (1067204026).

1226487878 is a wasteful number, since it uses less digits than its factorization.

1226487878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7964227.

The product of its digits is 2408448, while the sum is 53.

The square root of 1226487878 is about 35021.2489497448. The cubic root of 1226487878 is about 1070.4205055224.

The spelling of 1226487878 in words is "one billion, two hundred twenty-six million, four hundred eighty-seven thousand, eight hundred seventy-eight".