1226872476 has 36 divisors (see below), whose sum is σ = 3136114800. Its totient is φ = 404361408.

The previous prime is 1226872447. The next prime is 1226872477. The reversal of 1226872476 is 6742786221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226872477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188256 + ... + 194663.

It is an arithmetic number, because the mean of its divisors is an integer number (87114300).

Almost surely, 2^1226872476 is an apocalyptic number.

It is an amenable number.

1226872476 is an abundant number, since it is smaller than the sum of its proper divisors (1909242324).

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

1226872476 is a wasteful number, since it uses less digits than its factorization.

1226872476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383018 (or 383013 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 1226872476 is about 35026.7394428885. The cubic root of 1226872476 is about 1070.5323801331.

The spelling of 1226872476 in words is "one billion, two hundred twenty-six million, eight hundred seventy-two thousand, four hundred seventy-six".