279228645000 has 540 divisors, whose sum is σ = 984098460345. Its totient is φ = 71501664000.

The previous prime is 279228644999. The next prime is 279228645013. The reversal of 279228645000 is 546822972.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 8 ways, for example, as 843670116 + 278384974884 = 29046^2 + 527622^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=373650.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 5268464974 + ... + 5268465026.

Almost surely, 2^279228645000 is an apocalyptic number.

279228645000 is a gapful number since it is divisible by the number (20) 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 279228645000

279228645000 is an abundant number, since it is smaller than the sum of its proper divisors (704869815345).

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

279228645000 is an equidigital number, since it uses as much as digits as its factorization.

279228645000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 279228645000 in words is "two hundred seventy-nine billion, two hundred twenty-eight million, six hundred forty-five thousand".