1215046400 has 54 divisors (see below), whose sum is σ = 3007445532. Its totient is φ = 486016000.

The previous prime is 1215046363. The next prime is 1215046403. The reversal of 1215046400 is 46405121.

It is not an unprimeable number, because it can be changed into a prime (1215046403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 88526 + ... + 101325.

Almost surely, 2^1215046400 is an apocalyptic number.

1215046400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1215046400 is an abundant number, since it is smaller than the sum of its proper divisors (1792399132).

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

1215046400 is an equidigital number, since it uses as much as digits as its factorization.

1215046400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189877 (or 189858 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1215046400 is about 34857.5156888726. The cubic root of 1215046400 is about 1067.0815747008.

The spelling of 1215046400 in words is "one billion, two hundred fifteen million, forty-six thousand, four hundred".