1226364400 has 90 divisors (see below), whose sum is σ = 2998858160. Its totient is φ = 481877760.

The previous prime is 1226364397. The next prime is 1226364401. The reversal of 1226364400 is 44636221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226364401) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6225102 + ... + 6225298.

Almost surely, 2^1226364400 is an apocalyptic number.

1226364400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1226364400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1499429080).

1226364400 is an abundant number, since it is smaller than the sum of its proper divisors (1772493760).

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

1226364400 is an equidigital number, since it uses as much as digits as its factorization.

1226364400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 1226364400 is about 35019.4860042234. The cubic root of 1226364400 is about 1070.3845824009.

The spelling of 1226364400 in words is "one billion, two hundred twenty-six million, three hundred sixty-four thousand, four hundred".