1227196400 has 60 divisors (see below), whose sum is σ = 2959480224. Its totient is φ = 489024000.

The previous prime is 1227196387. The next prime is 1227196409. The reversal of 1227196400 is 46917221.

It is a happy number.

It is a super-2 number, since 2×1227196400² = 3012022008345920000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227196409) 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, 102740 + ... + 114060.

Almost surely, 2^1227196400 is an apocalyptic number.

1227196400 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 1227196400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1479740112).

1227196400 is an abundant number, since it is smaller than the sum of its proper divisors (1732283824).

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

1227196400 is a wasteful number, since it uses less digits than its factorization.

1227196400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11610 (or 11599 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1227196400 is about 35031.3630908076. The cubic root of 1227196400 is about 1070.6265873207.

The spelling of 1227196400 in words is "one billion, two hundred twenty-seven million, one hundred ninety-six thousand, four hundred".