1228184400 has 60 divisors (see below), whose sum is σ = 3934287872. Its totient is φ = 327515520.

The previous prime is 1228184389. The next prime is 1228184407. The reversal of 1228184400 is 44818221.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228184407) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 510544 + ... + 512943.

Almost surely, 2^1228184400 is an apocalyptic number.

1228184400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1228184400 is an abundant number, since it is smaller than the sum of its proper divisors (2706103472).

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

1228184400 is a wasteful number, since it uses less digits than its factorization.

1228184400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023508 (or 1023497 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 1228184400 is about 35045.4619030767. The cubic root of 1228184400 is about 1070.9138261379.

The spelling of 1228184400 in words is "one billion, two hundred twenty-eight million, one hundred eighty-four thousand, four hundred".