1214720400 has 60 divisors (see below), whose sum is σ = 3891158192. Its totient is φ = 323925120.

The previous prime is 1214720383. The next prime is 1214720401. The reversal of 1214720400 is 40274121.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1214720401) 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, 504934 + ... + 507333.

Almost surely, 2^1214720400 is an apocalyptic number.

1214720400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1214720400 is an abundant number, since it is smaller than the sum of its proper divisors (2676437792).

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

1214720400 is a wasteful number, since it uses less digits than its factorization.

1214720400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012288 (or 1012277 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 1214720400 is about 34852.8391956810. The cubic root of 1214720400 is about 1066.9861326092.

Adding to 1214720400 its reverse (40274121), we get a palindrome (1254994521).

The spelling of 1214720400 in words is "one billion, two hundred fourteen million, seven hundred twenty thousand, four hundred".