1152647280 has 80 divisors (see below), whose sum is σ = 3970236960. Its totient is φ = 307372032.

The previous prime is 1152647269. The next prime is 1152647303. The reversal of 1152647280 is 827462511.

1152647280 is a `hidden beast` number, since 1 + 1 + 5 + 2 + 647 + 2 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264657 + ... + 268976.

It is an arithmetic number, because the mean of its divisors is an integer number (49627962).

Almost surely, 2^1152647280 is an apocalyptic number.

1152647280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1152647280 is an abundant number, since it is smaller than the sum of its proper divisors (2817589680).

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

1152647280 is a wasteful number, since it uses less digits than its factorization.

1152647280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533655 (or 533643 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 1152647280 is about 33950.6594928582. The cubic root of 1152647280 is about 1048.4928581322.

The spelling of 1152647280 in words is "one billion, one hundred fifty-two million, six hundred forty-seven thousand, two hundred eighty".