1234065280 has 64 divisors (see below), whose sum is σ = 3371654880. Its totient is φ = 423106560.

The previous prime is 1234065277. The next prime is 1234065281. The reversal of 1234065280 is 825604321.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234065281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133251 + ... + 142210.

Almost surely, 2^1234065280 is an apocalyptic number.

1234065280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1234065280 is an abundant number, since it is smaller than the sum of its proper divisors (2137589600).

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

1234065280 is an equidigital number, since it uses as much as digits as its factorization.

1234065280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275487 (or 275475 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 1234065280 is about 35129.2652926303. The cubic root of 1234065280 is about 1072.6203804940.

The spelling of 1234065280 in words is "one billion, two hundred thirty-four million, sixty-five thousand, two hundred eighty".