1214622400 has 84 divisors (see below), whose sum is σ = 3006135720. Its totient is φ = 483020800.

The previous prime is 1214622391. The next prime is 1214622403. The reversal of 1214622400 is 42264121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214622403) 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, 284280 + ... + 288520.

It is an arithmetic number, because the mean of its divisors is an integer number (35787330).

Almost surely, 2^1214622400 is an apocalyptic number.

1214622400 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 1214622400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1503067860).

1214622400 is an abundant number, since it is smaller than the sum of its proper divisors (1791513320).

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

1214622400 is a wasteful number, since it uses less digits than its factorization.

1214622400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4442 (or 4427 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1214622400 is about 34851.4332560370. The cubic root of 1214622400 is about 1066.9574380901.

Adding to 1214622400 its reverse (42264121), we get a palindrome (1256886521).

The spelling of 1214622400 in words is "one billion, two hundred fourteen million, six hundred twenty-two thousand, four hundred".