1215952320 has 224 divisors, whose sum is σ = 4253057280. Its totient is φ = 291880960.

The previous prime is 1215952301. The next prime is 1215952333. The reversal of 1215952320 is 232595121.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1192771 + ... + 1193789.

Almost surely, 2^1215952320 is an apocalyptic number.

1215952320 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 1215952320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2126528640).

1215952320 is an abundant number, since it is smaller than the sum of its proper divisors (3037104960).

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

1215952320 is a wasteful number, since it uses less digits than its factorization.

1215952320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163 (or 1153 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 1215952320 is about 34870.5078827367. The cubic root of 1215952320 is about 1067.3467087154.

The spelling of 1215952320 in words is "one billion, two hundred fifteen million, nine hundred fifty-two thousand, three hundred twenty".