280222488 has 192 divisors, whose sum is σ = 983673600. Its totient is φ = 69984000.

The previous prime is 280222487. The next prime is 280222489. The reversal of 280222488 is 884222082.

It is an interprime number because it is at equal distance from previous prime (280222487) and next prime (280222489).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280222487) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 123363 + ... + 125613.

It is an arithmetic number, because the mean of its divisors is an integer number (5123300).

Almost surely, 2^280222488 is an apocalyptic number.

280222488 is a gapful number since it is divisible by the number (28) 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 280222488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (491836800).

280222488 is an abundant number, since it is smaller than the sum of its proper divisors (703451112).

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

280222488 is a wasteful number, since it uses less digits than its factorization.

280222488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2302 (or 2295 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 36.

The square root of 280222488 is about 16739.8473111316. The cubic root of 280222488 is about 654.3864954481.

The spelling of 280222488 in words is "two hundred eighty million, two hundred twenty-two thousand, four hundred eighty-eight".